Asymmetric Synthesis of Chiral 1,2-Amino Alcohols and Morpholin-2-ones from Arylglyoxals
作者:Wyatt C. Powell、Maciej A. Walczak
DOI:10.1021/acs.joc.8b01516
日期:2018.9.7
Chiral 1,2-amino alcohols are privileged scaffolds with important applications as drug candidates and chiral ligands. Although various methods for the preparation of this structural motif have been reported, these methods are limited because of the use of precious metals and ligands. Here, we report a practical and high yielding synthesis of chiral 1,2-amino alcoholsusing arylglyoxals and pseudoephedrine
Regio- and stereoselectivity of the formation of 1,3-oxazolidines in the reaction of l-ephedrine with phenylglyoxal. Unexpected rearrangement of 2-benzoyl-3,4-dimethyl-5-phenyl-1,3-oxazolidine to 4,5-dimethyl-3,6-diphenylmorpholin-2-one.
Optically active 2-benzoyl-3,4-dimethyl-5-phenyl-1,3-oxazolidines, obtained by the reaction of l-ephedrine with phenylglyoxal, after keeping without solvent undergo a spontaneous stereospecific rearrangement to 4,5-dimethyl-3,6-diphenylmorpholin-2-one.
Asymmetric synthesis. I. Synthesis and absolute configuration of .alpha.-aminoalkanesulfonates derived from (-)-ephedrine and aromatic aldehyde bisulfites
作者:L. Neelakantan
DOI:10.1021/jo00815a011
日期:1971.8
Chang, Chih-Jung; Fang, Jim-Min; Lee, Gene-Hsian, Journal of the Chemical Society. Perkin transactions I, 1994, # 24, p. 3587 - 3594