Cleavage Mode of Benzyltributylstannane Radical Cations Produced in Photoinduced Electron Transfer
作者:Shunichi Fukuzumi、Kiyomi Yasui、Shinobu Itoh
DOI:10.1246/cl.1997.161
日期:1997.2
Cleavage of metal-carbon bond of benzyltributylstannane radical cation produced in photoinduced electron transfer from benzyltributylstannane to 10-methylacridinium ion occurs to give benzyl radical rather than benzyl cation, resulting in formation of 9-benzyl-10-methyl-9,10-dihydroacridine selectively in dehydrated acetonitrile. In the presence of water, however, 10-methyl-9,10-dihydroacridine is also formed via electron transfer from benzyl radical to the dihydroacridine radical cation produced by protonation of acridinyl radical following the initial photoinduced electron transfer.
在无水乙腈中,从苄基三丁基锡烷向10-甲基吖啶锍离子发生的光诱导电子转移过程中生成的苄基三丁基锡烷自由基阳离子断裂金属-碳键,产生苄基自由基而非苄基阳离子,从而选择性生成9-苄基-10-甲基-9,10-二氢吖啶。然而,在有水存在的情况下,通过苄基自由基向初始光诱导电子转移后生成的吖啶自由基阳离子进行质子化得到的二氢吖啶自由基阳离子的电子转移,也生成了10-甲基-9,10-二氢吖啶。