An Efficient Preparation of 1,2-Bis(Dipyrrin-9-Ylene)-Ethane, the First Fully Conjugated<i>b</i>-Homobilin
作者:Qingqi Chen、Bingzi Chen、Xiaoli Li
DOI:10.1080/00397910008087334
日期:2000.2
Abstract 1,2-Bis(dipyrrin-9-ylene)-ethane 1, the first fully conjugated b-homobilin, was synthesized in two steps with excellent yield by first condensing 1,2-bispyrrylethane 3 with 2 molecular 5-formylpyrrole 4, followed by dehydration of the result 1,2-Bis(dipyrrin-9-yl)-ethane 2 with DDQ in dichloromethane. The chemical and spectroscopic properties of this novel chromophoric system are discussed
摘要 1,2-双(二吡喃-9-亚苯基)-乙烷1,第一个完全共轭的b-homobilin,通过首先将1,2-双吡咯烷3与2分子的5-甲酰基吡咯4缩合,分两步合成,收率优异然后在二氯甲烷中用 DDQ 使所得的 1,2-双(二吡喃-9-基)-乙烷 2 脱水。讨论了这种新型发色系统的化学和光谱特性。