Selective Functionalization of sp<sup>3</sup> C−H Bonds Adjacent to Nitrogen Using (Diacetoxyiodo)benzene (DIB)
作者:Xing-Zhong Shu、Xiao-Feng Xia、Yan-Fang Yang、Ke-Gong Ji、Xue-Yuan Liu、Yong-Min Liang
DOI:10.1021/jo901583r
日期:2009.10.2
various cis-2,3-diacetoxylated piperidines. On the other hand, tetrahydroisoquinoline derivatives gave various α-C−H functionalized products in the presence of PhI(OAc)2. Nitroalkanes, dialkyl malonates, and β-keto ester are active participants in this coupling reaction. Meanwhile, α-amino nitriles can also be obtained by oxidative coupling of amines with malononitrile.
已经报道了PhI(OAc)2介导的与氮原子相邻的sp 3 C-H键的选择性功能化。当使用哌啶衍生物时,观察到与氮原子相邻的α和βsp 3 CH的直接二乙酰氧基化,得到各种顺式-2,3-二乙酰氧基哌啶。另一方面,在PhI(OAc)2存在下,四氢异喹啉衍生物可得到各种α-CH官能化产物。硝基烷,丙二酸二烷基酯和β-酮酯是该偶联反应的积极参与者。同时,也可以通过胺与丙二腈的氧化偶联获得α-氨基腈。