Method for synthesis of diphenylphosphinic acid was written by Luo, Mei. And the patent was published on February 15,2012.COA of Formula: C12H15NO2 The following contents are mentioned in the patent:
The title method comprises preparing 2-[(4R/S)-4,5-dihydro-4-R-2-oxazolinyl]phenol or 2-[(4R/S)-4,5-dihydro-4-R-2-oxazolinyl]aniline, reacting with diphenylphosphinyl chloride in toluene in the presence of triethylamine for 2 days, filtering, evaporating, carrying out chromatog. with petroleum ether-dichloromethane (1:9) as eluent and volatilizing to obtain diphenylphosphonic acid crystal. The yield is about 5%. This study involved multiple reactions and reactants, such as (R)-2-(4-Isopropyl-4,5-dihydrooxazol-2-yl)phenol (cas: 1045894-43-6COA of Formula: C12H15NO2).
(R)-2-(4-Isopropyl-4,5-dihydrooxazol-2-yl)phenol (cas: 1045894-43-6) belongs to oxazolidine derivatives. Oxazolidines are commonly obtained by reaction of strained heterocycles, mainly aziridines. In another report, the incorporation of an additional substituted oxazolidine ring over a range of new biphenylazepinium salt organocatalysts for the asymmetric epoxidation of alkenes improved enantiocontrol over the parent structures.COA of Formula: C12H15NO2
Referemce:
Oxazolidine – Wikipedia,
Oxazolidine | C3H7NO – PubChem