Catalytic migratory oxidative coupling of nitrones through an outer-sphere C(<i>sp<sup>3</sup></i>)-H activation process
作者:Shogo Hashizume、Kounosuke Oisaki、Motomu Kanai
DOI:10.1002/tcr.201100024
日期:2011.9.29
efficient C‐H activation, which has attracted increased interest in organic chemistry. In this account, we describe a CuI‐catalyzed oxidative coupling between nitrones and various ethers or amines as an example. Predictable site‐selective C‐C bond formation was achieved through activation of the C‐H bonds in each coupling partner and the migration of a C‐N double bond. Mechanistic studies strongly suggested
外层氧化还原催化是有效C-H活化的关键,这引起了人们对有机化学的浓厚兴趣。在此说明中,我们以硝酮与各种醚或胺之间的Cu I催化的氧化偶联为例。通过激活每个偶联配偶体中的C-H键以及C-N双键的迁移,可以实现可预测的位点选择性C-C键形成。机理研究强烈表明,反应是通过以氧鎓/亚胺鎓阳离子物种为关键中间体进行的。机械信息允许将来扩展外层氧化还原催化作用。DOI 10.1002 / tcr.201100024