Palladium-Catalyzed Carboamination of Alkenes Promoted by <i>N-</i>Fluorobenzenesulfonimide via C−H Activation of Arenes
作者:Carolyn F. Rosewall、Paul A. Sibbald、Dmitry V. Liskin、Forrest E. Michael
DOI:10.1021/ja9031659
日期:2009.7.15
unactivated nucleophilic arenes are incorporated to give carboamination products in good yields. A variety of protected amide and carbamate groups are tolerated, and various five-, six-, and seven-membered rings are formed in good yields. Under these conditions, halobenzenes are activated at the C-H bond rather than the C-X bond, and very high regioselectivity for the para substitution product is observed
该报告描述了一种独特的 Pd 催化的受保护氨基烯烃的氧化碳胺化,其中加入了廉价的未活化的亲核芳烃,从而以良好的产率得到碳胺化产物。可以耐受各种受保护的酰胺和氨基甲酸酯基团,并以良好的产率形成各种五元、六元和七元环。在这些条件下,卤代苯在 CH 键而不是 CX 键处被活化,并且在所有情况下都观察到对位取代产物的非常高的区域选择性。我们建议这种碳胺化是通过 Pd(IV) 烷基中间体的亲电芳香取代发生的。