作者:LEISTNER S.、 SACHSE W.、 PREUSSLER J.、 WAGNER G.
DOI:——
日期:——
Synthesis of 3-Oxa- and 3-Aza-1-dethiacepham Analogs
作者:S. D. Sharma、Verinder Kaur
DOI:10.1055/s-1989-27354
日期:——
A convenient synthesis of 3-oxa- and 3-aza-1-dethiacepham analogs via [2+2]cycloaddition of in situ generated Ketenes and 1,3-benzoxazine and quinazoline derivatives as imine components is described.