preparation of (3r,4s)-3-hydroxy-4-phenyl-2-azetidinone_kain industrial additive
background and overview[1] (3r,4s)-3-hydroxy-4-phenyl-2-azetidinone, referred to as (-)β-lactam, is a very potential chiral drug intermediate. there are two isomers, namely (3r, 4s) configuration and …

