作者:Nurul H. Ansari、Matthew C. Taylor、Björn C.G. Söderberg
DOI:10.1016/j.tetlet.2017.01.103
日期:2017.3
The naturally occurring polybrominated indoles 2,2',5,5'-tetrabromo-3,3'-bi-1H-indole, 2,2',6,6'-tetrabromo-3,3'-bi-1H-indole, and 2,2',5,5',6,6'-hexabromo-3,3'-bi-1H-indole were synthesized using a palladium catalyzed, carbon monoxide mediated, double reductive N-heterocyclization of 2,3-bis(2-nitro-4(or 5)-bromophenyl)-1,4-butadienes as the key step.
天然存在的多溴吲哚2,2',5,5'-tetrabromo-3,3'-bi-1H-吲哚,2,2',6,6'-tetrabromo-3,3'-bi-1H-吲哚,和2,2',5,5',6,6'-hexabromo-3,3'-bi-1H-吲哚是使用钯催化的2,3-一氧化碳介导的双还原N-杂环合成的双(2-硝基-4(或5)-溴苯基)-1,4-丁二烯是关键步骤。