Kresze,G. et al., Chemische Berichte, 1965, vol. 98, p. 3401 - 3409
作者:Kresze,G. et al.
DOI:——
日期:——
Synthesis of N-Sulfonyl Amidines and Acyl Sulfonyl Ureas from Sulfonyl Azides, Carbon Monoxide, and Amides
作者:Shiao Y. Chow、Luke R. Odell
DOI:10.1021/acs.joc.6b02894
日期:2017.3.3
A Pd-catalyzed and ligand-free carbonylation/cycloaddition/decarboxylation cascade synthesis of sulfonyl amidines from sulfonyl azides and substituted amides at low CO pressure is reported. The reaction proceeds via an initial Pd-catalyzed carbonylative generation of sulfonyl isocyanates from sulfonyl azides, followed by a [2 + 2] cycloaddition with amides and subsequent decarboxylation, which liberates