名称:
Mild and convenient one-pot synthesis of β-lactams by condensation of titanium enolates of 2-pyridylthioesters with imines.
摘要:
Treatment of 2-pyridylthioesters with triethylamine in the presence of titanium tetrachloride affords titanium enolates that add to imines to give beta-lactams in fair to excellent yields with moderate to good stereoselectivity.
DOI:
10.1016/s0040-4020(01)96198-8