Structure and Reactivity of Small Ring Compounds. III. Solvolyses of 4-Methyl Spiro[2,4]hept-4-yl and 4-Methyl Spiro[2,5]oct-4-yl<i>p</i>-Chlorobenzoates
作者:Takashi Tsuji、Ichiro Moritani、Shinya Nishida、Goro Tadokoro
DOI:10.1246/bcsj.40.2344
日期:1967.10
solvolyses of 4-methyl spiro[2,4]hept-4-yl, 4-methyl spiro[2,5]oct-4-yl, 1,2,2-trimethylcyclopentyl, 1,2,2-trimethylcyclohexyl, spiro[2,4]hept-4-yl, and spiro[2,5]oct-4-yl p-chlorobenzoates have been examined in an aqueous solution of dioxane. The rate of the solvolysis of 4-methyl spiro[2,4]hept-4-yl p-chlorobenzoate was 26000 times greater than that of the corresponding secondary derivatives and 18000
4-甲基螺[2,4]庚-4-基、4-甲基螺[2,5]辛-4-基、1,2,2-三甲基环戊基、1,2,2-三甲基环己基、螺的溶剂分解[2,4]庚-4-基和螺[2,5]辛-4-基对氯苯甲酸酯已在二恶烷的水溶液中进行了检测。4-甲基螺[2,4]庚基-4-基对氯苯甲酸酯的溶剂分解速率比相应的二级衍生物大26000倍,比1,2,2-三甲基环戊基衍生物大18000倍. 同样,在环己基系列中,4-甲基螺[2,5]-辛-4-基对氯苯甲酸酯的溶解速度比螺[2,5]辛-4-基酯快7700倍,比1 ,2,2-三甲基环己酯。叔螺衍生物的所有溶剂分解产物都完全保留了起始材料的骨架。因此,4-甲基螺[2, 4]庚-4-基酯得到4-甲基螺[2,4]庚-4-醇(60%)、4-甲基螺[2,4]庚-4-烯(27%)的混合物,和 4-亚甲基螺[2,4]庚烷 (13%)。4-甲基螺[2,5]辛-4-基酯...