One Pot Hydroformylation/Intramolecular Aldol Condensation Reactions of 1-Allyl-2- carbonylpyrroles: A New Entry into Hydroindolizines Synthesis
作者:Roberta Settambolo、Sandra Miniati、Raffaello Lazzaroni
DOI:10.1081/scc-120022467
日期:2003.9.1
7-Formyl-5-methyl-5,6-dihydroindolizine and 7-formyl-6-methyl-5,6-dihydroindolizine were obtained via a domino hydroformylation/cyclization/dehydration reactions sequence starting from the corresponding 1-allyl-2-formylpyrroles. An intramolecular aldol condensation between the carbon atom adjacent to the formyl group in the chain of the produced aldehydes and the carbonyl group directly bonded to the pyrrole
摘要 7-Formyl-5-methyl-5,6-dihydroindolizine 和 7-formyl-6-methyl-5,6-dihydroindolizine 是通过多米诺加氢甲酰化/环化/脱水反应序列从相应的 1-allyl-2-甲酰基吡咯。所产生的醛链中与甲酰基相邻的碳原子与直接键合到吡咯环的羰基之间的分子内醇醛缩合最有可能产生吲哚嗪结构。通过使用 2-乙酰基-1-(2-甲基丙-2-烯基) 吡咯类似地合成了 7-甲酰基-6,8-二甲基-5,6-二氢茚茚。