Dixanthates, formed from vic-diols, can easily be transformed to the corresponding olefins with diphenylsilane in a new, high-yielding radical reaction.
Asymmetric synthesis of α-hydroxyethyl β-lactam derivatives: an approach to thienamycin
摘要:
The asymmetric synthesis of a beta-lactam ring with three contiguous chiral centers, including a hydroxyethyl side chain, was accomplished by the preparation and oxidative cyclization of the appropriate beta,gamma-unsaturated hydroxamate.