Preparation of 2-[(4R)-4,5-dihydro-4-substituted-2-oxazolyl]-phenol derivatives useful as Henry reaction catalysts was written by Luo, Mei. And the patent was published on December 7,2011.Quality Control of (R)-2-(4-Phenyl-4,5-dihydrooxazol-2-yl)phenol The following contents are mentioned in the patent:
The invention relates to a process for the preparation of 2-[(4R)-4,5-dihydro-4-substituted-2-oxazolyl]-phenol derivatives I (R = i-Bu, Ph, or Bn), useful as Henry reaction catalysts. For instance, the compound I (R = Ph) was prepared by heterocyclization of o-cyanophenol with D-phenylglycinol in 60% yield. This study involved multiple reactions and reactants, such as (R)-2-(4-Phenyl-4,5-dihydrooxazol-2-yl)phenol (cas: 150699-08-4Quality Control of (R)-2-(4-Phenyl-4,5-dihydrooxazol-2-yl)phenol).
(R)-2-(4-Phenyl-4,5-dihydrooxazol-2-yl)phenol (cas: 150699-08-4) 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. 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.Quality Control of (R)-2-(4-Phenyl-4,5-dihydrooxazol-2-yl)phenol
Referemce:
Oxazolidine – Wikipedia,
Oxazolidine | C3H7NO – PubChem