Highly enantioselective routes to darzens and acetate aldol products from achiral aldehydes and t-butyl bromoacetate
摘要:
New methodology is described for the enantioselective coupling of t-butyl bromoacetate with aldehydes to give anti-alpha-bromo beta-hydroxy esters (1), useful precursors of chiral glycidic esters (2), acetate aldols (3), beta-amino acid esters (4) and alpha-amino acid esters (5).