据报道,使用单氘代环己-1,4-二烯作为氘代氢(HD)气体的替代物,对烯烃进行区域选择性加氢氘代。无金属过程可能在B(C 6 F 5)3催化下进行,可能是通过氘代抽提而形成的硼氢化氘[DB(C 6 F 5)3 ] -和高度布朗斯台德酸性Wheland中间体。使用低催化剂负载量(2.5mol%),并且反应在室温下进行。
Cobalt-Catalyzed Stereoretentive Hydrogen Isotope Exchange of C(sp<sup>3</sup>)–H Bonds
作者:W. Neil Palmer、Paul J. Chirik
DOI:10.1021/acscatal.7b02051
日期:2017.9.1
Cobalt dialkyl complexes bearing α-diimine ligands proved to be active precatalysts for the nondirected, C(sp3)–H selective hydrogen isotope exchange (HIE) of alkylarenes using D2 gas as the deuterium source. Alkylarenes with a variety of substitution patterns and heteroatom substituents on the arene ring were successfully labeled, enabling high levels of incorporation into primary, secondary, and