A Cationic High-Valent Cp*Co<sup>III</sup>Complex for the Catalytic Generation of Nucleophilic Organometallic Species: Directed CH Bond Activation
作者:Tatsuhiko Yoshino、Hideya Ikemoto、Shigeki Matsunaga、Motomu Kanai
DOI:10.1002/anie.201209226
日期:2013.2.18
inexpensive and atom‐economical approach to CH bond functionalization, a cationic CoIII complex (see scheme) was used to generate nucleophilic organometallic species in situ without additional activating reagents. Under these conditions, aryl CH bonds underwent efficient addition to polar electrophiles, including α,β‐unsaturated N‐acyl pyrroles as β‐substituted ester and amide surrogates.
活性而不活化:在一种廉价且原子经济的CH键官能化方法中,使用阳离子Co III配合物(请参见方案)在原位生成亲核有机金属物种,而无需其他活化剂。在这些条件下,芳基CH键要有效地添加到极性亲电体中,包括α,β-不饱和N-酰基吡咯作为β-取代的酯和酰胺替代物。