Stereoselective palladium-catalyzed cyclopropanation of α,β-unsaturated carboxylic acids derivatized with oppolzer's sultam
摘要:
N-enoyl sultams, derived from alpha,beta-unsaturated carboxylic acids and bornane[10,2]sultam, undergo a stereoselective Pd-catalyzed cyclopropanation upon treatment with diazomethane. The stereoselectivity of the reaction is temperature dependent.