Radical Transformation of Aliphatic C–H Bonds to Oxime Ethers via Hydrogen Atom Transfer
作者:Xinmou Wang、Mo Yu、Hongjian Song、Yuxiu Liu、Qingmin Wang
DOI:10.1021/acs.orglett.1c03087
日期:2021.11.5
we describe a strategy for conversion of aliphatic C–H bonds to oxime ethers viahydrogen atom transfer. In this strategy, the decatungstate anion and sulfate radical play complementary roles in the abstraction of hydrogen atoms from primary, secondary, and tertiary C–H bonds of alkanes. The easy accessibility of alkanes and the broad substrate scope, mild conditions, and excellent regioselectivity
Cobalt Catalyzed Functionalization of Unactivated Alkenes: Regioselective Reductive C−C Bond Forming Reactions
作者:Boris Gaspar、Erick M. Carreira
DOI:10.1021/ja904856k
日期:2009.9.23
The cobalt catalyzed hydroaldoximation and hydrocyanooximation of unactivatedalkenes is reported. Secondary and tertiary aldoximes and oximonitriles are synthesized with excellent regioselectivity under mild conditions, and conversion of the products to valuable intermediates is documented. The reactions expand the arsenal of reductive carbon-carbon bond forming reactions as well as regioselective
Cobalt bis(acetylacetonate)–<i>tert</i>-butyl hydroperoxide–triethylsilane: a general reagent combination for the Markovnikov-selective hydrofunctionalization of alkenes by hydrogen atom transfer
作者:Xiaoshen Ma、Seth B Herzon
DOI:10.3762/bjoc.14.201
日期:——
and practical reagent combination to initiate a broad range of Markovnikov-selective alkene hydrofunctionalization reactions. These transformations are believed to proceed by cobalt-mediated hydrogen atom transfer (HAT) to the alkene substrate, followed by interception of the resulting alkyl radical intermediate with a SOMOphile. In addition, we report the first reductivecouplings of unactivated
developed using a range of bifunctionalization reagents. This strategy involves a unique N(sp3)–N(sp2) radical coupling between the hydrazine radical and the imine radical. More than 30 triazane core motifs were constructed by installing imines and various functionalgroups, including alkyl, phenyl, cyanoalkyl, and sulfonyl groups, on both ends of the nitrogen–nitrogen bond of diazenes in an efficient