Unusual lithium transfer reactions in lithium-substituted organo-silicon compounds. Reinvestigation of the reaction of 1,8-di-lithionaphthalene with trimethylchlorosilane
作者:R.J. Wroczynski、Mary W. Baum、Daniel Kost、Kurt Mislow、Steven C. Vick、Dietmar Seyferth
DOI:10.1016/s0022-328x(00)81092-x
日期:1979.5
The product of the reaction of 1,8-dilithionaphthalene with trimethylchlorosilane is 2-(1-naphthyl)-2,4,4-trimethyl-2,4-disilapentane rather than 1,8-bis(trimethylsilyl)naphthalene as previously reported. A novel, presumably intramolecular, metalation process transfers the organolithium function in 1-trimethylsilyl-8-lithionaphthalene to a methyl substituent on the trimethylsilyl group, and it is this
1,8-二锂基萘与三甲基氯硅烷的反应产物是2-(1-萘基)-2,4,4-三甲基-2,4-二硅戊烷,而不是先前报道的1,8-双(三甲基甲硅烷基)萘。一种可能在分子内的新颖金属化工艺将1-三甲基甲硅烷基-8-锂基萘中的有机锂官能团转移至三甲基甲硅烷基上的甲基取代基,并且正是这种新的有机锂试剂与第二摩尔的三甲基氯硅烷反应。1,1-二甲基-2,3-双(三甲基甲硅烷基)-1-甲硅烷基被甲基锂开环,随后有机锂官能团从乙烯基碳原子到硅上的甲基的类似转移。