(Chloromethyl)dimethylsilanol was synthesized by the hydrolysis of (chloromethyl)dimethylchlorosilane, N-[(chloromethyl)dimethylsilyl]amines, or N-(chloromethyl)dimethylsilyl-N-methylamide of diisopropylphosphoric acid.
EISCH, JOHN J.;CHIU, CHINGCHEN S., J. ORGANOMET. CHEM., 358,(1988) N-3, C1-C5
作者:EISCH, JOHN J.、CHIU, CHINGCHEN S.
DOI:——
日期:——
Pentacoordinate silicon intermediates in relay substitution reactions of organosilanes: successive nucleophilic attack at silicon and its adjacent carbon
作者:John J. Eisch、Chingchen S. Chiu
DOI:10.1016/0022-328x(88)87105-5
日期:1988.12
directly, FSiR2CH2EPh. This possibility of directing nucleophilicattack toward silicon or its adjacent carbon has great importance in the synthesis of substituted organosilanes. The mechanism of these so-called relay nucleophilicsubstitutions is proposed as involving pentacoordinate silicon intermediates. This concept of initial nucleophilicattack at silicon and the subsequent relaying of the nucleophile
已显示,ClCH 2 R 2 SiCl类型的氯甲基甲硅烷基氯与酚或胺(PhEH,具有EO或NMe)一起在硅上受到动力学控制的亲核攻击,从而产生PhESiR 2 CH类型的产物2 Cl。随后的产物用乙腈中的KF处理会导致亲核试剂从硅转移到碳,并形成FSiR 2 CH 2 EPh。或者,与PhEH和KF同时处理ClCH 2 R 2 SiCl会直接产生相同的热力学控制产物FSiR 2 CH 2EPh。将亲核攻击指向硅或其相邻碳的可能性在合成取代的有机硅烷中非常重要。这些所谓的中继亲核取代的机理被认为涉及五配位硅中间体。最初的亲核攻击是在硅上发生,随后亲核剂从五配位硅转移到相邻碳原子的概念也显示适用于α,β-环氧烷基硅烷的异常反应。