Using ortho-bis(porpargyl alcohol) derivatives as starting materials, we employed sulfenyl or sulfinyl chloride under base condition to generate bis-allene intermediates.

所采用方式以邻位二丙炔醇为起始物，在碱性境中与次磺氯或亚磺氯作用生丙二，经化反应得多并苯化物。