Synthesis of 5-methylene-1,3-cyclohexadienes (o-isotoluenes) via electrocyclization of (4Z)-1,2,4,6-heptatetraenes
作者:Kung K. Wang、Quan Zhang、Junkai Liao
DOI:10.1016/0040-4039(96)00774-5
日期:1996.6
1-lithio-3,4-pentadien-1-ynes derived from 10 followed by trimethyltin chloride and acetic acid furnished o-isotoluenes 13 in a single operation. The reaction proceeded through an initial formation of diene-allenes 11, which underwent facile electrocyclizations to produce 12 leading to o-isotoluenes 13.
alkenyldicyclohexylborane的治疗5与1-锂-3,4-戊二烯-1-炔衍生自10,随后三甲基氯化锡和乙酸布置ö -isotoluenes 13在单个操作中。通过初始地层二烯丙二烯的进行反应11,它接受容易electrocyclizations以产生12导致ö -isotoluenes 13。