Synthesis of 2-(1-methyl-4-piperylid-3-ene)-9,10-dihydro-4<i>H</i>-benzo[4,5]- cyclohepta[1,2-<i>b</i>]thiophen-10-one, a new potential antiasthmatic analogue of zaditene
作者:Michal W. Majchrzak
DOI:10.1002/jhet.5570220511
日期:1985.9
The title compound has been prepared in four steps from readily available starting material. The key reaction is the metallation of 10-methoxy-4H-benzo[4,5]cyclohepta[1,2-b]thiophene, which occurs exclusively at the desired 2 position.
由容易获得的起始原料通过四个步骤制备了标题化合物。关键反应是10-甲氧基-4 H-苯并[4,5]环庚[1,2- b ]噻吩的金属化,仅在所需的2位发生。