Organotitanium chemistry XVIII. Dehalogenation of organic halides by Cp2TiX (X = Cl, Br)
作者:Qian Yanlong、Li Guisheng、Yao-Zeng Huang
DOI:10.1016/0022-328x(90)85446-6
日期:1990.1
Dicyclopentadienyltitanium chloride and bromide prepared in situ from the reduction of dicyclopentadienyltitanium dichloride by isopropylmagnesium chloride and bromide, respectively, are effective dehalogenating reagents for benzylic, allylic halides and α-bromoketones. Benzylic and allylic halides are transformed into the coupling products whereas the α-bromoketones are reduced to the corresponding ketones
Facile reductive coupling of benzylic halides with ferrous oxalate dihydrate
作者:Jitender M. Khurana、Sushma Chauhan、Golak C. Maikap
DOI:10.1039/b211792d
日期:2003.5.15
Facile reductive coupling of benzylic halides is reported with ferrous oxalate dihydrate in DMF or HMPA under nitrogen atmosphere at 155–160 °C. The coupling is proposed to proceed by two successive oxidative additions of benzylic halides to ferrous oxalate to give an intermediate organoiron complex which undergoes concerted dimerization to give the corresponding reductively coupled dimers in high yields.
Correction to “Nickel-Catalyzed Asymmetric Reductive Cross-Coupling To Access 1,1-Diarylalkanes”
作者:Kelsey E. Poremba、Nathaniel T. Kadunce、Naoyuki Suzuki、Alan H. Cherney、Sarah E. Reisman
DOI:10.1021/jacs.8b05247
日期:2018.6.20
Pages 5684 and 5685, Table of
第 5684 页和第 5685 页,表
Copper(II)-Photocatalyzed N–H Alkylation with Alkanes
作者:Yi-Wen Zheng、Rok Narobe、Karsten Donabauer、Shahboz Yakubov、Burkhard König
DOI:10.1021/acscatal.0c01924
日期:2020.8.7
of N–H bonds with alkanes using a photoinduced copper(II) peroxide catalytic system. Upon light irradiation, the peroxide serves as a hydrogen atom transfer reagent to activate stable C(sp3)–H bonds for the reaction with a broad range of nitrogen nucleophiles. The method enables the chemoselective alkylation of amides and is utilized for the late-stage functionalization of N–H bond containing pharmaceuticals
Ruthenium‐Catalyzed Dehydrogenation Through an Intermolecular Hydrogen Atom Transfer Mechanism
作者:Lin Huang、Alessandro Bismuto、Simon A. Rath、Nils Trapp、Bill Morandi
DOI:10.1002/anie.202015837
日期:2021.3.22
The direct dehydrogenation of alkanes is among the most efficient ways to access valuable alkene products. Although several catalysts have been designed to promote this transformation, they have unfortunately found limited applications in fine chemical synthesis. Here, we report a conceptually novel strategy for the catalytic, intermolecular dehydrogenation of alkanes using a ruthenium catalyst. The combination