Oxidations with lead tetraacetate. III. Cyclization of ketone semicarbazones to 2-imino-3-1,3,4-oxadiazolines
作者:Audrey M. Cameron、Paul R. West、John Warkentin
DOI:10.1021/jo01263a002
日期:1969.11
.beta.-Lactam-4-ylidenes
作者:Michel Zoghbi、John Warkentin
DOI:10.1021/jo00010a008
日期:1991.5
beta-Lactam-4-ylidenes, generated by thermolysis of easily accessible spiro-fused beta-lactam oxadiazolines, are trapped in typical intramolecular and intermolecular carbene reactions.
ZOGHBI, MICHEL;WARKENTIN, JOHN, J. ORG. CHEM., 56,(1991) N0, C. 3214-3215