Proprietes photochimiques du dimethyl-2,4 iodo-3 pentene-2, des iodo-1 cycloalcenes, des (halogenomethylene) cycloalcanes et des (dihalogenomethylene) cyclohexes。形成 de produits 激进分子和 ioniques。机制。Donnees 光谱 UV、IR、RMN 1 H
Preparation and remarkable reactivity of the elusive (1,1,3,3-tetramethylallyl)lithium
作者:Jose A. Cabral、Theodore Cohen、Wendel W. Doubleday、Ellen Francis Duchelle、Gideon Fraenkel、Bao Shan Guo、Simon H. Yu
DOI:10.1021/jo00039a031
日期:1992.6
Although traditional methods of allyllithium production failed for (1,1,3,3-tetramethylallyl)lithium, it was readily prepared in a two-pot sequence starting with mesityl oxide. The key step is reductive lithiation of 4-(phenyl-thio)-2, 4-dimethyl-2-pentene with lithium 1-(dimethylamino)naphthalenide. Treating the reductive lithiation Product with trimethylstannyl chloride and the resulting allylstannane with methyllithium in the presence of N,N,N,N-tetramethylethylenediamine provided a solution of the allyllithium free of lithium thiophenoxide. This material adds to anthracene at -78-degrees-C.
Peracid oxidation of tetramethylallene
作者:Jack K. Crandall、Warren H. Machleder
DOI:10.1021/ja01028a021
日期:1968.12
KROPP, P. J.;MCNEELY, S. A.;DAVIS, R. D., J. AMER. CHEM. SOC., 1983, 105, N 23, 6907-6915