Easy Access to Versatile Catalytic Systems for C−H Activation and Reductive Amination Based on Tetrahydrofluorenyl Rhodium(III) Complexes
作者:Vladimir B. Kharitonov、Sofiya A. Runikhina、Yulia V. Nelyubina、Dmitry V. Muratov、Denis Chusov、Dmitry A. Loginov
DOI:10.1002/chem.202100572
日期:2021.7.26
synthesized by treatment of the bis(ethylene) derivative (η5-tetrahydrofluorenyl)Rh(C2H4)2 (1 a) with halogens. An analogous reaction of the cyclooctadiene complex (η5-tetrahydrofluorenyl)Rh(cod) (1 b) with I2 is complicated by the side formation of [(cod)RhI]2. The reaction of 2 b with 2,2′-bipyridyl leads to cation [(η5-tetrahydrofluorenyl)Rh(2,2′-bipyridyl)I]+ (3). The halide abstraction from 2 a,b with
在 1,2,3,4-四氢芴基配体的基础上,开发了一种用于构建 C-C 和 CN 键的新型有效铑催化剂的简单方法。卤化物[(η 5 -四氢芴基)RhX 2 ] 2 ( 2 a : X=Br; 2 b : X=I)是通过对双(乙烯)衍生物(η 5 -四氢芴基)Rh(C 2 H 4 ) 2 ( 1a ) 与卤素。环辛二烯配合物 (η 5 -四氢芴基)Rh(cod) ( 1b ) 与 I 2的类似反应因[(cod)RhI] 的侧形成而复杂化2 . 2 b与 2,2'-联吡啶基的反应产生阳离子 [(η 5 -四氢芴基)Rh(2,2'-联吡啶基)I] + ( 3 )。用铊或银盐从2 a、b 中提取卤化物使我们能够制备夹心化合物与传入的环戊二烯基、二碳化物和均三甲苯配体 [(η 5 -四氢芴基)RhCp] + ( 4 ), (η 5 -四氢芴基)Rh(η- 7,8-C 2 B 9 H 11 ) ( 5