Tag: 200-300

Syntheses and crystal structures of 4,5-dihydro-2-(2-hydroxyphenyl)oxazole-containing metal complexes was written by Bolm, Carsten; Weickhardt, Konrad; Zehnder, Margareta; Glasmacher, Dorothea. And the article was included in Helvetica Chimica Acta on June 19,1991.Formula: C13H17NO2 The following contents are mentioned in the article:

ML2 (M = Cu, HL = I (R = H, R1 = CHMe2, Ph, CMe3 or R = Ph, RI = Me); M = Zn, Co, Ni, FeCl, R = H, R1 = CHMe2) and I were prepared ML2 (M = Cu, Zn, Ni; R = H, R1 = CHMe2) were analyzed by x-ray diffraction studies [monoclinic, space group P21, A2, A2, Z = 4, 2, 2, Rw = 0.078, 0.074, 0.060, resp.]. L coordinates through the hydrooxazole N and phenolato O atoms. CuL2 and NiL2 have a distorted square planar configuration whereas ZnL2 has a distorted tetrahedral configuration. ML2 were characterized by IR and mass spectra. This study involved multiple reactions and reactants, such as (S)-2-(4-(tert-Butyl)-4,5-dihydrooxazol-2-yl)phenol (cas: 135948-04-8Formula: C13H17NO2).

(S)-2-(4-(tert-Butyl)-4,5-dihydrooxazol-2-yl)phenol (cas: 135948-04-8) belongs to oxazolidine derivatives. Oxazolidine-based compounds are well-known chiral auxiliaries and strategic molecular moieties in chemistry since they can effectively mask or mimic amino acid units or amino alcohols. Some reports highlighted again the effectiveness of oxazolidine-based compounds in driving the stereo- or diastereotopic outcome of chemical reactions.Formula: C13H17NO2

135948-04-8;(S)-2-(4-(tert-Butyl)-4,5-dihydrooxazol-2-yl)phenol;The future of 135948-04-8;New trend of C13H17NO2;function of 135948-04-8

Oxazoline Early Transition Metal Complexes: Functionalizable Achiral Titanium(IV), Titanium(III), Zirconium(IV), Vanadium(III), and Chiral Zirconium(IV) Bis(oxazoline) Complexes was written by Cozzi, Pier Giorgio; Floriani, Carlo; Chiesi-Villa, Angiola; Rizzoli, Corrado. And the article was included in Inorganic Chemistry on May 24,1995.Application In Synthesis of (S)-2-(4-Benzyl-4,5-dihydrooxazol-2-yl)phenol The following contents are mentioned in the article:

Large-scale syntheses of the (hydroxyphenyl)oxazoline ligands [I; R = R’ = Me, R” = H (L1); R = CH2Ph, R’ = R” = H (L2); R = CHMe2, R’ = R” = H (L3); R = Me, R’ = H, R” = Ph (L4); R = Ph, R’ = R” = H (L5)] are reported. The conversion of L1-L5 into the corresponding sodium salts was employed for metal complexation. The reaction of L1 with TiCl4·2THF, TiCl3·3THF, ZrCl4·2THF, and VCl3·3THF in a 1:2 metal:ligand ratio afforded the corresponding hexacoordinate functionalizable metal complexes: cis-[Cl2Ti(L1)2], 11; cis-[(THF)ClTi(L1)2], 12; cis-[Cl2Zr(L1)2], 13; trans-[(THF)ClV(L1)2], 14. The structures of 11, 12, and 14 were clarified by x-ray anal. The reaction of the L3 and L4 sodium salts with ZrCl4·2THF in a 1:2 metal:ligand ratio led to the corresponding chiral functionalizable metal complexes, whose structures were clarified by x-ray anal.: cis-[Cl2Zr(L3)2], 15; cis-[Cl2Zr(L4)2], 16. A common significant feature discovered from these studies is the existence of intramol. hydrogen bonding, which is probably responsible for the high conformational rigidity of the oxazoline ligand. Crystallog. details are as follows: 11 is monoclinic, space group I2/a, with a 16.443(2), b 8.365(1), c 17.945(2) Å, β 106.93(1)°, Z = 4, and R = 0.034; 12 is orthorhombic, space group Pca21, with a 15.669(2), b 17.750(3), c 18.971(3) Å, Z = 8, and R = 0.050; 14 is monoclinic, space group P21/n, with a 9.391(4), b 28.618(6), c 12.077(4) Å, β 105.79(2)°, Z = 4, and R = 0.052; 16 is monoclinic, space group P21, with a 10.161(2), b 14.151(3), c 12.361(2) Å, β 93.76(2)°, Z = 2, and R = 0.033. This study involved multiple reactions and reactants, such as (S)-2-(4-Benzyl-4,5-dihydrooxazol-2-yl)phenol (cas: 163165-92-2Application In Synthesis of (S)-2-(4-Benzyl-4,5-dihydrooxazol-2-yl)phenol).

(S)-2-(4-Benzyl-4,5-dihydrooxazol-2-yl)phenol (cas: 163165-92-2) belongs to oxazolidine derivatives. Oxazolidine-based compounds have started to attract attention also in the medicinal and materials chemistry fields. Oxazolidines are cyclic condensation products of β-amino alcohols and aldehydes or ketone, and they undergo a facile and complete hydrolysis in aqueous solution. Alterations in carbonyl moiety control the rate of formation of a given β-amino alcohol. Oxazolidines are weaker bases (pKa 6–7) than parent β-amino alcohols and found to be more lipophilic than the parent compound at physiological pH.Application In Synthesis of (S)-2-(4-Benzyl-4,5-dihydrooxazol-2-yl)phenol

163165-92-2;(S)-2-(4-Benzyl-4,5-dihydrooxazol-2-yl)phenol;The future of 163165-92-2;New trend of C16H15NO2;function of 163165-92-2

Cp*rhodium complexes with salicyloxazolines: Diastereoselective synthesis, configurational stability and use as asymmetric catalysts for a Diels-Alder reaction was written by Davenport, Adam J.; Davies, David L.; Fawcett, John; Russell, David R.. And the article was included in Journal of Organometallic Chemistry on May 1,2006.Electric Literature of C16H15NO2 The following contents are mentioned in the article:

Reaction of [RhCl2Cp*]2 (Cp* = η-C5Me5) with appropriate salicyloxazolines in the presence of NaOMe gave 72-83% [RhCl(R,R’-saloxaz)Cp*] [R = R’ = Me (1); R = H, R’ = Me2CH (2), PhCH2 (3), Ph (4)] which were fully characterized; complexes 2-4 contain an enantiopure (S)-saloxaz ligand. The diastereoselectivity of complexation depends on the substituents and the absolute configuration at the metal center is unstable in solution Thus, salicyloxazoline ligands coordinate diastereoselectively to the Cp*RhCl fragment with the oxazoline substituent oriented towards the chloride except in the case of the Ph-substituted complex. Treatment of 2 with 4-methylpyridine and NaSbF6 in MeOH at reflux gave [Rh(4-Mepy){(S)-iPr-saloxaz}Cp*][SbF6] (5) while [Rh(OH2)(Me2-saloxaz)Cp*][SbF6] (6) was prepared by reaction of 1 with AgSbF6. Three complexes, [RhCl(Me2-saloxaz)Cp*] (1), [RhCl{(S)-iPr-saloxaz}Cp*] (2), and [Rh(OH2)(Me2-saloxaz)Cp*][SbF6] (6) were characterized by x-ray crystallog. Some of the complexes, after treatment with AgSbF6, were tested as enantioselective catalysts for the Diels-Alder reaction of methacrolein with cyclopentadiene, but gave much poorer results than the corresponding arene ruthenium complexes. This study involved multiple reactions and reactants, such as (S)-2-(4-Benzyl-4,5-dihydrooxazol-2-yl)phenol (cas: 163165-92-2Electric Literature of C16H15NO2).

(S)-2-(4-Benzyl-4,5-dihydrooxazol-2-yl)phenol (cas: 163165-92-2) belongs to oxazolidine derivatives. Oxazolidines are commonly obtained by reaction of strained heterocycles, mainly aziridines. Oxazolidines are cyclic condensation products of β-amino alcohols and aldehydes or ketone, and they undergo a facile and complete hydrolysis in aqueous solution. Alterations in carbonyl moiety control the rate of formation of a given β-amino alcohol. Oxazolidines are weaker bases (pKa 6–7) than parent β-amino alcohols and found to be more lipophilic than the parent compound at physiological pH.Electric Literature of C16H15NO2

163165-92-2;(S)-2-(4-Benzyl-4,5-dihydrooxazol-2-yl)phenol;The future of 163165-92-2;New trend of C16H15NO2;function of 163165-92-2

Arene-ruthenium complexes with salicyloxazolines: diastereoselective synthesis, configurational stability and applications as asymmetric catalysts for Diels-Alder reactions was written by Davenport, Adam J.; Davies, David L.; Fawcett, John; Russell, David R.. And the article was included in Dalton Transactions on May 7,2004.Quality Control of (S)-2-(4-(tert-Butyl)-4,5-dihydrooxazol-2-yl)phenol The following contents are mentioned in the article:

Reaction of the dimers [RuCl2(η6-arene)]2 (arene = mesitylene a, p-cymene b, C6H6 c) with salicyloxazolines in the presence of NaOMe gives the corresponding [RuCl(R,R’-saloxaz)(arene)] (R = R’ = Me 1; R = H, R’ = Me2CH 2, Me3C 3, PhCH2 4, Ph 5), which were fully characterized. [RuL(iPr-saloxaz)(mes)]Y (L = py 6, 2-Mepy 7, 4-Mepy 8, PPh3 9; Y- = SbF6 or BPh4) were prepared by treating the chloride 2a with ligand L and NaY (Y- = SbF6 or BPh4) in MeOH at reflux. Halide complexes [RuX(iPr-saloxaz)(mes)] (X = Br, 10; X = iodo, 11) were synthesized by treating 2a with AgSbF6 then with 1.2 equiv KBr or NaI, whereas the Me complex [RuMe(iPr-saloxaz)(mes)] 12 was synthesized from 2a by reaction with MeLi. Five complexes, [RuCl(iPr-saloxaz)(mes)] 2a, [RuCl(tBu-saloxaz)(p-cymene)] 3b, [RuCl(Ph-saloxaz)(mes)] 5a, [Ru(4-Mepy)(iPr-saloxaz)(mes)][SbF6] 7, and [Ru(PPh3)(iPr-saloxaz)(mes)][SbF6] 9, were characterized by x-ray crystallog. Treatment of complexes 1-5 with AgSbF6 gives cationic species which are enantioselective catalysts for the Diels-Alder reaction of acroleins with cyclopentadiene, and the effect of substituents on enantioselectivity was examined This study involved multiple reactions and reactants, such as (S)-2-(4-(tert-Butyl)-4,5-dihydrooxazol-2-yl)phenol (cas: 135948-04-8Quality Control of (S)-2-(4-(tert-Butyl)-4,5-dihydrooxazol-2-yl)phenol).

(S)-2-(4-(tert-Butyl)-4,5-dihydrooxazol-2-yl)phenol (cas: 135948-04-8) belongs to oxazolidine derivatives. Oxazolidines are commonly obtained by reaction of strained heterocycles, mainly aziridines. As well as other multifunctional heterocyclic compounds, oxazolidine rings play an essential role in organic and medicinal chemistry, behaving, in some cases as powerful antitumor agents.Quality Control of (S)-2-(4-(tert-Butyl)-4,5-dihydrooxazol-2-yl)phenol

135948-04-8;(S)-2-(4-(tert-Butyl)-4,5-dihydrooxazol-2-yl)phenol;The future of 135948-04-8;New trend of C13H17NO2;function of 135948-04-8

Arene-ruthenium complexes with salicyloxazolines: diastereoselective synthesis, configurational stability and applications as asymmetric catalysts for Diels-Alder reactions was written by Davenport, Adam J.; Davies, David L.; Fawcett, John; Russell, David R.. And the article was included in Dalton Transactions on May 7,2004.Category: oxazolidine The following contents are mentioned in the article:

Reaction of the dimers [RuCl2(η6-arene)]2 (arene = mesitylene a, p-cymene b, C6H6 c) with salicyloxazolines in the presence of NaOMe gives the corresponding [RuCl(R,R’-saloxaz)(arene)] (R = R’ = Me 1; R = H, R’ = Me2CH 2, Me3C 3, PhCH2 4, Ph 5), which were fully characterized. [RuL(iPr-saloxaz)(mes)]Y (L = py 6, 2-Mepy 7, 4-Mepy 8, PPh3 9; Y- = SbF6 or BPh4) were prepared by treating the chloride 2a with ligand L and NaY (Y- = SbF6 or BPh4) in MeOH at reflux. Halide complexes [RuX(iPr-saloxaz)(mes)] (X = Br, 10; X = iodo, 11) were synthesized by treating 2a with AgSbF6 then with 1.2 equiv KBr or NaI, whereas the Me complex [RuMe(iPr-saloxaz)(mes)] 12 was synthesized from 2a by reaction with MeLi. Five complexes, [RuCl(iPr-saloxaz)(mes)] 2a, [RuCl(tBu-saloxaz)(p-cymene)] 3b, [RuCl(Ph-saloxaz)(mes)] 5a, [Ru(4-Mepy)(iPr-saloxaz)(mes)][SbF6] 7, and [Ru(PPh3)(iPr-saloxaz)(mes)][SbF6] 9, were characterized by x-ray crystallog. Treatment of complexes 1-5 with AgSbF6 gives cationic species which are enantioselective catalysts for the Diels-Alder reaction of acroleins with cyclopentadiene, and the effect of substituents on enantioselectivity was examined This study involved multiple reactions and reactants, such as (S)-2-(4-Benzyl-4,5-dihydrooxazol-2-yl)phenol (cas: 163165-92-2Category: oxazolidine).

(S)-2-(4-Benzyl-4,5-dihydrooxazol-2-yl)phenol (cas: 163165-92-2) belongs to oxazolidine derivatives. Oxazolidines are commonly obtained by reaction of strained heterocycles, mainly aziridines. Oxazolidines are well known as key portions of bioactive molecules or precursors of chiral molecules, as well as established chiral auxiliaries.Category: oxazolidine

163165-92-2;(S)-2-(4-Benzyl-4,5-dihydrooxazol-2-yl)phenol;The future of 163165-92-2;New trend of C16H15NO2;function of 163165-92-2

Arene-ruthenium complexes with salicyloxazolines: diastereoselective synthesis, configurational stability and applications as asymmetric catalysts for Diels-Alder reactions was written by Davenport, Adam J.; Davies, David L.; Fawcett, John; Russell, David R.. And the article was included in Dalton Transactions on May 7,2004.SDS of cas: 150699-08-4 The following contents are mentioned in the article:

Reaction of the dimers [RuCl2(η6-arene)]2 (arene = mesitylene a, p-cymene b, C6H6 c) with salicyloxazolines in the presence of NaOMe gives the corresponding [RuCl(R,R’-saloxaz)(arene)] (R = R’ = Me 1; R = H, R’ = Me2CH 2, Me3C 3, PhCH2 4, Ph 5), which were fully characterized. [RuL(iPr-saloxaz)(mes)]Y (L = py 6, 2-Mepy 7, 4-Mepy 8, PPh3 9; Y- = SbF6 or BPh4) were prepared by treating the chloride 2a with ligand L and NaY (Y- = SbF6 or BPh4) in MeOH at reflux. Halide complexes [RuX(iPr-saloxaz)(mes)] (X = Br, 10; X = iodo, 11) were synthesized by treating 2a with AgSbF6 then with 1.2 equiv KBr or NaI, whereas the Me complex [RuMe(iPr-saloxaz)(mes)] 12 was synthesized from 2a by reaction with MeLi. Five complexes, [RuCl(iPr-saloxaz)(mes)] 2a, [RuCl(tBu-saloxaz)(p-cymene)] 3b, [RuCl(Ph-saloxaz)(mes)] 5a, [Ru(4-Mepy)(iPr-saloxaz)(mes)][SbF6] 7, and [Ru(PPh3)(iPr-saloxaz)(mes)][SbF6] 9, were characterized by x-ray crystallog. Treatment of complexes 1-5 with AgSbF6 gives cationic species which are enantioselective catalysts for the Diels-Alder reaction of acroleins with cyclopentadiene, and the effect of substituents on enantioselectivity was examined This study involved multiple reactions and reactants, such as (R)-2-(4-Phenyl-4,5-dihydrooxazol-2-yl)phenol (cas: 150699-08-4SDS of cas: 150699-08-4).

(R)-2-(4-Phenyl-4,5-dihydrooxazol-2-yl)phenol (cas: 150699-08-4) belongs to oxazolidine derivatives. Oxazolidines are well known as key portions of bioactive molecules or precursors of chiral molecules, as well as established chiral auxiliaries. Oxazolidines are cyclic condensation products of β-amino alcohols and aldehydes or ketone, and they undergo a facile and complete hydrolysis in aqueous solution. Alterations in carbonyl moiety control the rate of formation of a given β-amino alcohol.SDS of cas: 150699-08-4

150699-08-4;(R)-2-(4-Phenyl-4,5-dihydrooxazol-2-yl)phenol;The future of 150699-08-4;New trend of C15H13NO2;function of 150699-08-4

New phosphite-oxazoline ligands for efficient Pd-catalyzed substitution reactions was written by Pamies, Oscar; Dieguez, Montserrat; Claver, Carmen. And the article was included in Journal of the American Chemical Society on March 23,2005.COA of Formula: C13H17NO2 The following contents are mentioned in the article:

Nonracemic oxazolinylphenoxy dibenzodioxaphosphepines I (R = Me3C, Ph, Me2CH, Et, H; R1 = H, Ph; R2 = H, Me3C; R3 = H, MeO, Me3C) are prepared from nonracemic oxazolinylphenols and phosphochloridites generated in situ from substituted biphenyldiols; I act as catalysts for enantioselective palladium-catalyzed allylic substitution reactions of cyclic and acyclic allylic acetates with di-Me malonate and benzylamine to give allylic malonates and allylic amines in up to 99% yields and in 42-99% ee. Reaction of 2,2′-biphenols with phosphorus trichloride followed by the addition of nonracemic 4-substituted-2-(2-hydroxyphenyl)oxazolines yields I. In the presence of ligands I (R = H, Ph; R1 = Ph, H; R2 = R3 = Me3C), bis(allylpalladium chloride) acts as a catalyst for enantioselective allylic substitution reactions of 1,3-diphenyl-2-propenyl acetate with either di-Me malonate or benzylamine to yield PhCH:CHCHPhCH(CO2Me)2 or PhCH:CHCHPhNHCH2Ph in 100% conversion and in 98-99% ee. Other allylic acetates such as 3-penten-2-ol acetate, 2-cyclohexenyl acetate, and 1-phenyl-2-propenol acetate undergo palladium-catalyzed regioselective and enantioselective allylic substitution reactions with di-Me malonate to yield products in 74-99% ee; with 1-phenyl-2-propen-1-ol acetate, the product is obtained as a 68:32 mixture of regioisomers with the major regioisomer formed in 86% ee, while 1-(1-naphthyl)-2-propen-1-ol acetate gives a single regioisomer in 92% ee, with both substitution products formed in 100% yield. Ligands I afford excellent reaction rates and enantioselectivities while possessing broad scopes for different substrate types. This study involved multiple reactions and reactants, such as (S)-2-(4-(tert-Butyl)-4,5-dihydrooxazol-2-yl)phenol (cas: 135948-04-8COA of Formula: C13H17NO2).

(S)-2-(4-(tert-Butyl)-4,5-dihydrooxazol-2-yl)phenol (cas: 135948-04-8) belongs to oxazolidine derivatives. Oxazolidine-based compounds have started to attract attention also in the medicinal and materials chemistry fields. As well as other multifunctional heterocyclic compounds, oxazolidine rings play an essential role in organic and medicinal chemistry, behaving, in some cases as powerful antitumor agents.COA of Formula: C13H17NO2

135948-04-8;(S)-2-(4-(tert-Butyl)-4,5-dihydrooxazol-2-yl)phenol;The future of 135948-04-8;New trend of C13H17NO2;function of 135948-04-8

New phosphite-oxazoline ligands for efficient Pd-catalyzed substitution reactions was written by Pamies, Oscar; Dieguez, Montserrat; Claver, Carmen. And the article was included in Journal of the American Chemical Society on March 23,2005.Recommanded Product: 150699-08-4 The following contents are mentioned in the article:

Nonracemic oxazolinylphenoxy dibenzodioxaphosphepines I (R = Me3C, Ph, Me2CH, Et, H; R1 = H, Ph; R2 = H, Me3C; R3 = H, MeO, Me3C) are prepared from nonracemic oxazolinylphenols and phosphochloridites generated in situ from substituted biphenyldiols; I act as catalysts for enantioselective palladium-catalyzed allylic substitution reactions of cyclic and acyclic allylic acetates with di-Me malonate and benzylamine to give allylic malonates and allylic amines in up to 99% yields and in 42-99% ee. Reaction of 2,2′-biphenols with phosphorus trichloride followed by the addition of nonracemic 4-substituted-2-(2-hydroxyphenyl)oxazolines yields I. In the presence of ligands I (R = H, Ph; R1 = Ph, H; R2 = R3 = Me3C), bis(allylpalladium chloride) acts as a catalyst for enantioselective allylic substitution reactions of 1,3-diphenyl-2-propenyl acetate with either di-Me malonate or benzylamine to yield PhCH:CHCHPhCH(CO2Me)2 or PhCH:CHCHPhNHCH2Ph in 100% conversion and in 98-99% ee. Other allylic acetates such as 3-penten-2-ol acetate, 2-cyclohexenyl acetate, and 1-phenyl-2-propenol acetate undergo palladium-catalyzed regioselective and enantioselective allylic substitution reactions with di-Me malonate to yield products in 74-99% ee; with 1-phenyl-2-propen-1-ol acetate, the product is obtained as a 68:32 mixture of regioisomers with the major regioisomer formed in 86% ee, while 1-(1-naphthyl)-2-propen-1-ol acetate gives a single regioisomer in 92% ee, with both substitution products formed in 100% yield. Ligands I afford excellent reaction rates and enantioselectivities while possessing broad scopes for different substrate types. This study involved multiple reactions and reactants, such as (R)-2-(4-Phenyl-4,5-dihydrooxazol-2-yl)phenol (cas: 150699-08-4Recommanded Product: 150699-08-4).

(R)-2-(4-Phenyl-4,5-dihydrooxazol-2-yl)phenol (cas: 150699-08-4) belongs to oxazolidine derivatives. Oxazolidines that are the precursor to bisoxazolidines are in effect mono-oxazolidines. They are also used as moisture scavengers in polyurethane and other systems. Some reports highlighted again the effectiveness of oxazolidine-based compounds in driving the stereo- or diastereotopic outcome of chemical reactions.Recommanded Product: 150699-08-4

150699-08-4;(R)-2-(4-Phenyl-4,5-dihydrooxazol-2-yl)phenol;The future of 150699-08-4;New trend of C15H13NO2;function of 150699-08-4

Cobalt/Salox-Catalyzed Enantioselective C-H Functionalization of Arylphosphinamides was written by Yao, Qi-Jun; Chen, Jia-Hao; Song, Hong; Huang, Fan-Rui; Shi, Bing-Feng. And the article was included in Angewandte Chemie, International Edition on June 20,2022.Synthetic Route of C13H17NO2 The following contents are mentioned in the article:

Previous methods on Co(III)-catalyzed asym. C-H activation rely on the use of tailor-made cyclopentadienyl-ligated Co(III) complexes, which require lengthy steps for the preparation Herein, the authors report an unprecedented enantioselective C-H functionalization enabled by a simple Co/salicyloxazoline (Salox) catalysis. The chiral Salox ligands can be easily prepared in one step from salicylonitrile and chiral amino alcs. A broad range of P-stereogenic compounds were synthesized in high yields with excellent enantioselectivities (45 examples, up to 99% yield and >99% ee). The isolation and characterization of several intermediates provided insights into the generation of active catalytic Co species, the action of Salox, and the mode of stereocontrol. This study involved multiple reactions and reactants, such as (S)-2-(4-(tert-Butyl)-4,5-dihydrooxazol-2-yl)phenol (cas: 135948-04-8Synthetic Route of C13H17NO2).

(S)-2-(4-(tert-Butyl)-4,5-dihydrooxazol-2-yl)phenol (cas: 135948-04-8) belongs to oxazolidine derivatives.Oxazolidines are readily available also from propargyl amines. Oxazolidines are commonly used as metal ligands in asymmetric catalysis, synthetic intermediates in organic synthesis, and also used as the protecting groups.Synthetic Route of C13H17NO2

135948-04-8;(S)-2-(4-(tert-Butyl)-4,5-dihydrooxazol-2-yl)phenol;The future of 135948-04-8;New trend of C13H17NO2;function of 135948-04-8

Chiral-at-Iron Catalyst for Highly Enantioselective and Diastereoselective Hetero-Diels-Alder Reaction was written by Hong, Yubiao; Cui, Tianjiao; Ivlev, Sergei; Xie, Xiulan; Meggers, Eric. And the article was included in Chemistry – A European Journal on June 10,2021.Formula: C12H15NO2 The following contents are mentioned in the article:

This study demonstrates that chiral-at-iron complexes, in which all coordinated ligands are achiral and the overall chirality the consequence of a stereogenic iron center, are capable of catalyzing asym. transformations with very high enantioselectivities. The catalyst is based on a previously reported design (J. Am. Chem. Soc. 2017, 139, 4322), in which iron(II) is surrounded by two configurationally inert achiral bidentate N-(2-pyridyl)-substituted N-heterocyclic carbenes in a C2-sym. fashion and complemented by two labile acetonitriles. By replacing mesityl with more bulky 2,6-diisopropylphenyl substituents at the NHC ligands, the steric hindrance at the catalytic site was increased, thereby providing a markedly improved asym. induction. The new chiral-at-iron catalyst was applied to the inverse electron demand hetero-Diels-Alder reaction between β,γ-unsaturated α-ketoester and enol ethers provide 3,4-dihydro-2H-pyrans in high yields with excellent diastereoselectivities (up to 99 : 1 dr) and excellent enantioselectivities (up to 98% ee). Other electron rich dienophiles are also suitable as demonstrated for a reaction with a vinyl azide. This study involved multiple reactions and reactants, such as (R)-2-(4-Isopropyl-4,5-dihydrooxazol-2-yl)phenol (cas: 1045894-43-6Formula: C12H15NO2).

(R)-2-(4-Isopropyl-4,5-dihydrooxazol-2-yl)phenol (cas: 1045894-43-6) belongs to oxazolidine derivatives. Oxazolidines that are the precursor to bisoxazolidines are in effect mono-oxazolidines. They are also used as moisture scavengers in polyurethane and other systems. Oxazolidines are commonly used as metal ligands in asymmetric catalysis, synthetic intermediates in organic synthesis, and also used as the protecting groups.Formula: C12H15NO2

1045894-43-6;(R)-2-(4-Isopropyl-4,5-dihydrooxazol-2-yl)phenol;The future of 1045894-43-6;New trend of C12H15NO2;function of 1045894-43-6