Visible-Light-Driven, Metal-Free Divergent Difunctionalization of Alkenes Using Alkyl Formates
作者:Ming Zheng、Jing Hou、Le-Wu Zhan、Yan Huang、Ling Chen、Li-Li Hua、Yan Li、Wan-Ying Tang、Bin-Dong Li
DOI:10.1021/acscatal.0c04332
日期:2021.1.15
difunctionalization of alkenes has received considerable attention as an efficient and straightforward way to increase molecular complexity. However, examples of the difunctionalization of alkenes initiated by the intermolecular addition of alkoxycarbonyl radicals providing substituted alkanoates are still rare. Herein, we present the visible light-driven metal-free divergent difunctionalization of alkenes triggered
Formation of unsaturated esters in the single electron transfer reaction of cyclopropanone acetals with quinones under non-irradiated conditions
作者:Manabu Abe、Akira Oku
DOI:10.1016/s0040-4039(00)73235-7
日期:1994.5
Unsaturated esters were formed from cyclopropanone acetals in the reaction with DDQ or chloranil, where ring-opened CC and CO bonded adducts were the intermediates formed via a SET mechanism resulting in the ester formation.
The palladium(II) catalyzed olefin carbonylation reaction. Mechanisms and synthetic utility
作者:D. E. James、J. K. Stille
DOI:10.1021/ja00423a028
日期:1976.3
Electron Transfer Profile of Cyclopropanone Acetals in the Nonirradiated Reaction with Tetracyanoethylene, Chloranil, and Dicyanodichlorobenzoquinone
作者:Akira Oku、Manabu Abe、Masaharu Iwamoto
DOI:10.1021/jo00103a043
日期:1994.12
The donor profiles of cyclopropanone acetals 1 and 2 were examined in the reactions with electron accepters (TCNE, DDQ, chloranil, and 1-cyanonaphthalene). With TCNE under nonirradiating conditions, an exclusive 2 + 2 cycloaddition took place stereospecifically with monosubstituted acetals 1a-c but nonstereospecifically with disubstituted acetals 1d,e. With quinones, a ring-opening of the cyclopropane and its coupling with the quinone took place to give the C (cyclopropane)-O (quinone) adduct 9 (with chloranil) or 10 (with DDQ), the latter of which underwent the elimination of a phenol to produce unsaturated esters 5 and 6. In addition, the intervention of the C (cyclopropane)-C (quinone) adduct 14 (with chloranil) or 15 (with DDQ), both as the precursor of 5 and 6, was also postulated. With 1-cyanonaphthalene, under photolysis, the cis/trans isomerization of 1 and 2 occurred. The results provided evidences that cyclopropanone acetals, in general, are prone to function as donors. The mechanism of the reaction with quinones, in particular, was investigated in detail.