Generation of Reactive Ketenes under Flow Conditions through Zinc-Mediated Dehalogenation
作者:Steven Ley、Andreas Hafner
DOI:10.1055/s-0034-1380679
日期:——
Herein, we describe the generation of highly reactive monoalkyl and phenyl ketenes by using a dehalogenation procedure under flow conditions. All ketenes were generated in good yields (determined by quenching with an appropriate aniline derivative) and showed high reactivity in the [2+2] cycloaddition with imines, resulting in the formation of a range of β-lactams at room temperature in less than 10
Trans diastereoselective synthesis of 3-alkyl substituted β-lactams via the acid chloride-imine reaction of nonactivated acid chlorides
作者:Margaret Browne、Duane A. Burnett、Mary Ann Caplen、Lian-Yong Chen、John W. Clader、Martin Domalski、Sundeep Dugar、Pradeep Pushpavanam、Rosy Sher、Wayne Vaccaro、Monica Viziano、Hongrong Zhao
DOI:10.1016/0040-4039(95)00338-d
日期:1995.4
New conditions for the acid chloride-imine reaction of nonactivated alkyl acid chlorides provide 3-alkyl substituted β-lactams in good yields with high trans selectivity.