Synthesis of<i>N</i>,<i>N′</i>-Disulfonylamidines from Sulfonamides and Alkynes by a Two-Step, One-Pot Reaction with Nonafluorobutanesulfonyl Azide
作者:José Ramón Suárez、Joanna Kwiczak、Katarzyna Grenda、M. Luisa Jimeno、Jose Luis Chiara
DOI:10.1002/adsc.201201001
日期:2013.3.25
Nonafluorobutanesulfonylazide is an advantageous alternative to triflyl azide for the efficient synthesis of sulfonyl azidesfromsulfonamides in terms of its higher reactivity, lower cost, and non‐hazardous nature. The reagent has proven its utility in a novel synthesis of N,N′‐disulfonylamidines from available sulfonamides by a copper‐catalyzed two‐step, one‐pot sequential process with added terminal