通过使用Cbz-酰胺作为导向基团和Ir(III)作为催化剂,已经开发了一种通过邻位选择性C–H官能化合成邻位炔基化芳基烷基胺的便捷实用方法。各种底物具有良好的耐受性,以中等至良好的产率提供了相应的产物。此外,初步的机理研究揭示了酰胺在C–H活化过程中作为与Ir(III)配合物协同作用的配位中心的作用。这种由Cbz-酰胺促进的C Ar -H官能化的开发提供了一种实用的方法,在有机合成中具有潜在的应用前景。
Facile direct synthesis of unsymmetrical ureas from N-Alloc-, N-Cbz-, and N-Boc-protected amines using DABAL-Me3
作者:Soosung Kang、Hee-Kwon Kim
DOI:10.1016/j.tet.2018.06.011
日期:2018.7
A practical synthetic method for the direct synthesis of unsymmetrically substituted ureas from N-Alloc-, N-Cbz-, and N-Boc-protected amines is described. In this study, efficient direct conversion of the Alloc-, Cbz-, and Boc-carbamate compounds to ureas was achieved in the presence of DABAL-Me3, an air stable and easily handled reagent. Using this reaction method, both protected aromatic and aliphatic
Scope of the Suzuki−Miyaura Aminoethylation Reaction Using Organotrifluoroborates
作者:Gary A. Molander、Ludivine Jean-Gérard
DOI:10.1021/jo7015955
日期:2007.10.1
Potassium beta-aminoethyltrifluoroborates were prepared in good yields via hydroboration of the corre- sponding enecarbamates using the Snieckus hydroborating reagent. A wide variety of phenethylamines containing a potentially free primary amine after appropriate deprotection have been successfully prepared in good yield using these organotrifluoroborates as partners in Suzuki-Miyaura coupling with aryl bromides, iodides, and triflates.