<b>Small-Ring Compounds. XXXVI. 3-Methylenecyclobutyl Bromide and 1-Methylcyclobut-2-enyl Bromide</b>
作者:Edgar F. Kiefer、John D. Roberts
DOI:10.1021/ja00864a021
日期:1962.3
3-Methylenecyclobutyl bromide and 1-methylcyclobut-2-enyl bromide have been synthesized from the cycloaddition products of allene with acrylonitrile and vinyl benzoate. The rate constants for solvolysis of the two bromides in aqueous ethanol have been determined and correlated with the solvolysis rates of a series of analogous bromides. 1-Methylcyclobut-2-enyl bromide appears to exhibit some rate enhancement
由丙二烯与丙烯腈和苯甲酸乙烯酯的环加成产物合成了3-亚甲基环丁基溴和1-甲基环丁-2-烯基溴。两种溴化物在乙醇水溶液中的溶剂分解速率常数已经确定,并与一系列类似溴化物的溶剂分解速率相关联。1-甲基环丁-2-烯基溴化物似乎表现出一定的速率增强,这是由于电子形式上以3-位为中心的交叉环s型相互作用与过渡态中缺电子的1-位。