Electro-initiated Coupling Reactions of<i>N</i>-Acyliminium Ion Pools with Arylthiomethylsilanes and Aryloxymethylsilanes
作者:Seiji Suga、Ikuo Shimizu、Yosuke Ashikari、Yusuke Mizuno、Tomokazu Maruyama、Jun-ichi Yoshida
DOI:10.1246/cl.2008.1008
日期:2008.9.5
Electro-initiated coupling reactions of N-acyliminium ion with arylthiomethylsilanes and aryloxymethylsilanes were developed. Pulse electrolyses with intervals were found to be quite effective for the initiation. A chain mechanism involving cation, radical cation, and radical intermediates has been proposed.
Radical Addition to “Cation Pool”. Reverse Process of Radical Cation Fragmentation
作者:Tomokazu Maruyama、Seiji Suga、Jun-ichi Yoshida
DOI:10.1021/ja0511218
日期:2005.5.25
The reaction of an N-acyliminium ion with an alkyl iodide and hexabutyldistannane took place to give the alkylation product. A mechanism involving the addition of an alkyl radical to an N-acyliminium ion to produce the corresponding radicalcation has been suggested.
Reactions of a <i>N</i>-Acyliminium Ion Pool with Benzylsilanes. Implication of a Radical/Cation/Radical Cation Chain Mechanism Involving Oxidative C−Si Bond Cleavage
作者:Tomokazu Maruyama、Yusuke Mizuno、Ikuo Shimizu、Seiji Suga、Jun-ichi Yoshida
DOI:10.1021/ja068589a
日期:2007.2.1
The reaction of a N-acyliminium ion pool with benzylsilane proceeds by a chain mechanism involving oxidative C−Si bond cleavage. A radical/cation/radical cation crossover mechanism involving single electron transfer has been proposed. The effective binary system consisting of a stoichiometric amount of a benzylsilane and a catalytic amount of a more easily oxidized benzylstannane has been developed
Cycloaddition of “<i>N</i>-Acyliminium Ion Pools” with Carbon–Carbon Multiple Bonds
作者:Seiji Suga、Yamato Tsutsui、Aiichiro Nagaki、Jun-ichi Yoshida
DOI:10.1246/bcsj.78.1206
日期:2005.7
N-Acyliminium ion pools, which are generated from α-silyl carbamates, were found to react with a variety of alkenes and alkynes to give the corresponding cycloadducts. The reaction with styrene derivatives gave rise to the formation of a significant amount of polymeric products. The use of micromixing, however, resulted in a significant increase in the yield of the cycloadduct at the expense of the
Distannane mediated reaction of N-acyliminium ion pools with alkyl halides. A chain mechanism involving radical addition followed by electron transfer
作者:Tomokazu Maruyama、Seiji Suga、Jun-ichi Yoshida
DOI:10.1016/j.tet.2006.03.114
日期:2006.7
Hexabutyldistannane was found to be an effective mediator allowing the reaction of N-acyliminium ion pools with alkyl halides. A chain mechanism involving the addition of an alkyl radical generated from an alkyl halide to an N-acyliminium ion followed by the one-electron reduction of the resulting radical-cation by distannane was proposed.