Rhodium-Catalyzed Rearrangement of α-Diazo Thiol Esters to Thio-Substituted Ketenes. Application in the Synthesis of Cyclobutanones, Cyclobutenones, and <i>β</i>-Lactams
作者:Michael D. Lawlor、Thomas W. Lee、Rick L. Danheiser
DOI:10.1021/jo000227c
日期:2000.7.1
Exposure of alpha-diazo thiolesters (1) to the action of catalytic rhodium(II) acetate leads to a remarkably facile "thia-Wolff rearrangement", producing thio-substituted ketenes which combine with a variety of ketenophiles to provide access to alpha-thiocyclobutanones, cyclobutenones, and beta-lactams. Reductive desulfurization of these cycloadducts takes place under mild conditions and in excellent