2-Aminophenyl-1<i>H</i>-pyrazole as a Removable Directing Group for Copper-Mediated C–H Amidation and Sulfonamidation
作者:Wan-Chen Cindy Lee、Yuning Shen、David A. Gutierrez、Jie Jack Li
DOI:10.1021/acs.orglett.6b01105
日期:2016.6.3
sulfonamidation. When Cu(OAc)2 was employed as the copper source and 1,1,3,3-tetramethylguanidine as an organic base, the reaction, optimally carried out overnight in DMSO at 80 °C in open air, produced a variety of amides and sulfonamides in moderate to excellent yields. This directing group has proven to be particularly efficient in C–H sulfonamidation.
发现2-氨基苯基-1 H-吡唑是铜介导的好氧氧化C(sp 2 -H)键酰胺化和磺酰胺化反应的可移动双齿导向基团。当使用Cu(OAc)2作为铜源,使用1,1,3,3-四甲基胍作为有机碱时,该反应最佳地在DMSO中于80°C的空气中过夜进行,生成了各种酰胺和磺酰胺,产率中等至优异。事实证明,该指导小组在C–H磺酰胺化中特别有效。