Sensitised (electron-transfer) photochemical reactions of cyclopolysilanes, (R<sup>1</sup>R<sup>2</sup>Si)<sub>n</sub>(n= 3 or 4), in a polar, nucleophilic solvent; electron donating nature of cyclopolysilanes (n= 3–7)
作者:Hamao Watanabe、Motohiko Kato、Eiichi Tabei、Haruyoshi Kuwabara、Nobuo Hirai、Takeo Sato、Yoichiro Nagai
DOI:10.1039/c39860001662
日期:——
Irradiation (<390 nm) of cyclopolysilanes, (R1R2Si)n(n= 3 or 4), in a mixed solvent (EtOH-MeCN-cyclo-C6H12), with 9,10-dicyanoanthracene as sensitiser, gave the corresponding α-ethoxy-ω-hydropolysilanes resulting from ring-opening addition of ethanol to the polysilanes; a mechanism involving facile electron transfer from the polysilanes is proposed.
在混合溶剂(EtOH-MeCN-cyclo-C 6 H 12)中,用9,10-二氰基蒽作为敏化剂辐照(R 1 R 2 Si)n(n = 3或4 )的环聚硅烷(<390 nm),得到由乙醇开环加成到聚硅烷中而得到的相应的α-乙氧基-ω-氢聚硅烷。提出了一种涉及从聚硅烷容易地进行电子转移的机理。