作者:Pascal Dubé、Noah F. Fine Nathel、Michael Vetelino、Michel Couturier、Claude Larrivée Aboussafy、Simon Pichette、Matthew L. Jorgensen、Mark Hardink
DOI:10.1021/ol9023387
日期:2009.12.17
mediate the Lossen rearrangement of various hydroxamic acids to isocyanates. This process is experimentally simple and mild, with imidazole and CO2 being the sole stoichiometric byproduct. Significant for large-scale application, the method avoids the use of hazardous reagents and thus represents a green alternative to standard processing conditions for the Curtius and Hofmann rearrangements.
发现羰基二咪唑(CDI)介导各种异羟肟酸的洛森重排为异氰酸酯。该过程在实验上是简单且温和的,咪唑和CO 2是唯一的化学计量副产物。对于大规模应用而言意义重大,该方法避免了使用有害试剂,因此是Curtius和Hofmann重排标准处理条件的绿色替代方案。