Syntheses of p-terphenyls and 11,12-dihydroindeno[2,1-a]fluorene by one-pot benzannulation of Diels–Alder reactions of trans-1,2-dichloroethene and dienes
作者:Jinn-Hsuan Ho、Yu-Chen Lin、Li-Ting Chou、Ying-Zhe Chen、Wei-Qi Liu、Chao-Li Chuang
DOI:10.1016/j.tetlet.2013.02.002
日期:2013.4
p-terphenyls and 11,12-dihydroindeno[2,1-a]fluorene were successfully synthesized by one-pot benzannulation of Diels–Alder reaction with 1,2-dichloroethene as an acetylene equivalent dienophile. Two chlorine atoms could be good leaving groups to easily undergo subsequent elimination reactions of Diels–Alder products at a high temperature.
通过Diels-Alder反应的一锅法苯并环合反应,以1,2-二氯乙烯作为乙炔当量的亲二烯体,成功地合成了一系列取代的对-三联苯和11,12-二氢茚并[ 2,1- a ]芴。两个氯原子可能是良好的离去基团,易于在高温下随后发生Diels–Alder产品的消除反应。