作者:Kenneth B. Wiberg、John V. McClusky
DOI:10.1016/s0040-4039(00)96741-8
日期:1987.1
The reaction of 1,1-dibromo-2,3-bis(chloromethyl)cyclopropane with methyllithium leads initially to ring closure to 1-bromo-2-chloromethylbicyclo[1.1.0]butane. Further reaction leads to an unstable compound which reacts with phenylthiol to give 2-vinyl-1-cyclopropyl phenyl sulfide and undergoes thermal rearrangement at ∼ -50°C to give cyclopentadiene. Strong evidence is presented which suggests that
1,1-二溴-2,3-双(氯甲基)环丙烷与甲基锂的反应首先导致闭环成1-溴-2-氯甲基双环[1.1.0]丁烷。进一步的反应产生了不稳定的化合物,该化合物与苯硫醇反应生成2-乙烯基-1-环丙基苯基硫化物,并在约-50℃下进行热重排,生成环戊二烯。强有力的证据表明,三环[2.1.0.01,3]戊烷可能是中间体。