作者:Anthony P. Davis、Gwyneth J. Hughes、Peter R. Lowndes、Catherine M. Robbins、Elizabeth J. Thomas、Gordon H. Whitham
DOI:10.1039/p19810001934
日期:——
Epoxide ring-opening of 1,2-epoxy-1-trimethylsilylcyclohexane (3) has given a range of the 2-substituted 2-trimethylsilylcyclohexanols (4; X = H, OH, OMe, OCH2CHCH2, Br, I, SCN) in which attack by nucleophile has occurred at the carbon α to silicon. The products (4) have been transformed into a number of functionalised silanes, including the silyl-episulphide (9). Other epoxides which have been less
1,2-环氧-1-三甲基甲硅烷基环己烷(3)的环氧开环给出了一系列2-取代的2-三甲基甲硅烷基环己醇(4; X = H,OH,OMe,OCH 2 CH CH 2,Br,I, SCN),其中亲核试剂的攻击发生在碳原子对硅的α处。产物(4)已被转化为许多官能化的硅烷,包括甲硅烷基-环二硫化物(9)。尚未进行广泛研究的其他环氧化物是结构偏倚的环氧硅烷(10)和(11),八元环环氧硅烷(17)和(21)以及两种立体异构体2,3-环氧-3-三甲基甲硅烷基戊烷(26)和(29)。用H +处理后获得环氧开环加合物除化合物(17)以外,所有情况下均为-MeOH,其中双环醇(18)通过环过环反应形成。