Synthesis of β-Lactams from Diazoketones and Imines: The Use of Microwave Irradiation
作者:Michael R. Linder、Joachim Podlech
DOI:10.1021/ol015891+
日期:2001.6.1
[GRAPHICS]The transformation of diazoketones derived from alpha -amino acids to ketenes that, in turn, react further with imines to afford beta -lactams, can be realized not only by utilizing photochemical reaction conditions but also under the action of microwave irradiation. Under the latter reaction conditions 4-alkenyl substituted beta -lactams derived from amino acids, substrates that were not previously accessible, have been prepared. beta -actams possessing a trans-substitution pattern at the ring were obtained exclusively.