Radical alkylation of C(sp<sup>3</sup>)–H bonds with diacyl peroxides under catalyst-free conditions
作者:Hao Tian、Wentao Xu、Yuxiu Liu、Qingmin Wang
DOI:10.1039/c9cc08056b
日期:——
Herein, we describe a protocol for alkylation reactions of C(sp3)–H bonds with diacylperoxides by means of a process involving cross-coupling between an alkyl radical and an α-aminoalkyl radical. The mild, catalyst- and additive-free conditions make this protocol superior to previously reported C(sp3)–H alkylation strategies. The protocol was applied to 1,2,3,4-tetrahydroisoquinolines and a tetrahydro-β-carboline
Copper(I)-catalyzed tandem reaction: synthesis of 1,4-disubstituted 1,2,3-triazoles from alkyl diacyl peroxides, azidotrimethylsilane, and alkynes
作者:Muhammad Israr、Changqing Ye、Munira Taj Muhammad、Yajun Li、Hongli Bao
DOI:10.3762/bjoc.14.270
日期:——
A copper-catalyzed azide-alkyne cycloaddition (CuAAC) reaction for the synthesis of 1,4-disubstituted 1,2,3-triazolesfrom alkyl diacyl peroxides, azidotrimethylsilane, and terminalalkynes is reported. The alkyl carboxylic acids is for the first time being used as the alkyl azide precursors in the form of alkyl diacyl peroxides. This method avoids the necessity to handle organic azides, as they are
Copper-Catalyzed Decarboxylative Alkylation of Terminal Alkynes
作者:Changqing Ye、Yajun Li、Hongli Bao
DOI:10.1002/adsc.201700798
日期:2017.11.10
alkylation of terminal alkynesundermild reaction conditions has been reported. Various alkyl diacyl peroxides were applied as the alkyl source for the formation of C(sp3)−C(sp) bond. A range of terminal alkynes including arylalkynes and alkyl alkynes delivered the alkylated internal alkynes with good to high performances. Mechanism studies suggested that this reaction involves a free radical pathway.
Decarboxylative C(sp<sup>3</sup>)–N Cross-Coupling of Diacyl Peroxides with Nitrogen Nucleophiles
作者:Zi-Liang Tang、Xuan-Hui Ouyang、Ren-Jie Song、Jin-Heng Li
DOI:10.1021/acs.orglett.0c04203
日期:2021.2.5
We have disclosed a new radical-mediated decarboxylativeC(sp3)–N cross-coupling of diacyl peroxides with nitrogen nucleophiles. The primary and secondary alkyl radicals derived from corresponding diacyl peroxides were generated by copper catalysis or by merging copper catalysis and photoredox catalysis, respectively. Various N-alkyl nitrogen nucleophiles, including indazoles, triazoles, indoles, purine
Alkyl Esterification of Vinylarenes Enabled by Visible-Light-Induced Decarboxylation
作者:Liang Ge、Yajun Li、Wujun Jian、Hongli Bao
DOI:10.1002/chem.201702385
日期:2017.9.4
A decarboxylative alkyl esterification of vinylarenes induced by visiblelight is described. A variety of alkyl diacyl peroxides synthesized from readily available aliphatic carboxylicacids are used as not only the oxygenation but also alkylation source. This simple and easy to handle reaction has a wide substrate scope, excellent yields, and works under mild reaction conditions. Carbon dioxide is