Copper-catalyzed electrochemical cage C–H chalcogenation of o-carboranes has been realized to enable the synthesis of various cage C-sulfenylated and C-selenylated o-carboranes.
Ir-Catalyzed Selective B(3)-H Amination of <i>o</i>-Carboranes with NH<sub>3</sub>
作者:Yik Ki Au、Jie Zhang、Yangjian Quan、Zuowei Xie
DOI:10.1021/jacs.1c00593
日期:2021.3.24
Ammonia gas, NH3, is a cheap and widely used industrial feedstock, which has received tremendous research interests in its functionalization. This work reports a breakthrough in catalytic selective cage B(3)-H amination of o-carboranes with NH3 via Ir-catalyzed B-H/N-H dehydrocoupling, offering convenient and efficient access to a series of 3-NH2-o-carborane derivatives in moderate to high isolated
Transition metal-mediated B(4)–H hydroxylation/halogenation of <i>o</i>-carboranes bearing a 2-pyridylsulfenyl ligand
作者:Shu-Ting Guo、Peng-Fei Cui、Run-Ze Yuan、Guo-Xin Jin
DOI:10.1039/d0cc08290b
日期:——
Regioselective rhodium-induced B(4)–H hydroxylation and halogenation reactions of o-carboranes are reported. The key intermediate has been isolated. Iridium-induced B(3)/B(4)–H activation of o-carboranes has been achieved through steric control.
Selective Catalytic B–H Arylation of <i>o</i>-Carboranyl Aldehydes by a Transient Directing Strategy
作者:Xiaolei Zhang、Hongning Zheng、Jie Li、Fei Xu、Jing Zhao、Hong Yan
DOI:10.1021/jacs.7b07160
日期:2017.10.18
Carboranyl aldehydes are among the most useful synthons in derivatization of carboranes. However, compared to the utilization of carboranyl carboxylic acids in selective B-H bond functionalizations, the synthetic application of carboranyl aldehydes is limited due to the weakly coordinating nature of the aldehyde group. Herein, the direct arylation of o-carboranyl aldehydes has been developed via Pd-catalyzed
Microwave-Assisted Synthesis of 3,1,2- and 2,1,8-Re(I) and <sup>99m</sup>Tc(I)−Metallocarborane Complexes
作者:Andrew E. C. Green、Patrick W. Causey、Anika S. Louie、Andrea F. Armstrong、Laura E. Harrington、John F. Valliant
DOI:10.1021/ic0605928
日期:2006.7.1
heating was used to prepare eta5-rhenium carborane complexes in aqueous reaction media. For carboranes bearing sterically demanding substituents, isomerization of the cage from 3,1,2 to 2,1,8 derivatives occurred concomitantly with complexation. Microwave heating was equally effective at the tracer level using technetium-99m, affording access to a newclass of synthons for designing novel molecular