zinc bromides and regioconvergent Negishi coupling with aryl or alkenyl triflates. The use of a suitable phosphine ligand favoring Pd migration enabled the selective formation of the linear cross‐coupling product. Subsequently, mixtures of secondary alkyl bromides were prepared from linear alkanes by standard bromination, and regioconvergent cross‐coupling then provided access to the corresponding linear
Rhodium‐Catalyzed Stereoselective Deuteration of Benzylic C–H Bonds via Reversible η
<sup>6</sup>
‐Coordination
作者:Qi‐Kai Kang、Yuntong Li、Kai Chen、Hui Zhu、Wen‐Qiang Wu、Yunzhi Lin、Hang Shi
DOI:10.1002/anie.202117381
日期:2022.3.7
A novel rhodium-catalyzed H/D exchange of primary, secondary, and tertiary benzylic C−H bonds by means of an η6-coordination strategy is reported. The method, which features high regioselectivity and stereoretention, shows broad functional group tolerance and has been used in late-stage labeling of pharmaceuticals.
报道了通过 η 6配位策略实现伯、仲和叔苄基 C-H 键的新型铑催化 H/D 交换。该方法具有高区域选择性和立体保留性,具有广泛的官能团耐受性,已用于药物的后期标记。