Synthesis of tetrahydroindeno[1,2-b]indol-10-ones and their rearrangement to [2]benzopyrano[4,3-b]indol-5-ones
摘要:
The formation of tetrahydroindeno[1,2-b]indol-10-ones 1 by reaction of ninhydrin with substituted anilines is described. The tetrahydroindeno[1,2-b]indol-10-ones 1 rearrange to form 5,11-dihydro[2]benzopyran[4,3-b]indol-5-ones 8 when heated under acid conditions. Reaction of ninhydrin with 3-hydroxyaniline gave a benzo[b]indeno[2,1-d]furan 4.
Synthesis of tetrahydroindeno[1,2-b]indol-10-ones and their rearrangement to [2]benzopyrano[4,3-b]indol-5-ones
摘要:
The formation of tetrahydroindeno[1,2-b]indol-10-ones 1 by reaction of ninhydrin with substituted anilines is described. The tetrahydroindeno[1,2-b]indol-10-ones 1 rearrange to form 5,11-dihydro[2]benzopyran[4,3-b]indol-5-ones 8 when heated under acid conditions. Reaction of ninhydrin with 3-hydroxyaniline gave a benzo[b]indeno[2,1-d]furan 4.
Synthesis of tetrahydroindeno[1,2-b]indol-10-ones and their rearrangement to [2]benzopyrano[4,3-b]indol-5-ones
作者:James L. Bullington、John H. Dodd
DOI:10.1021/jo00070a017
日期:1993.8
The formation of tetrahydroindeno[1,2-b]indol-10-ones 1 by reaction of ninhydrin with substituted anilines is described. The tetrahydroindeno[1,2-b]indol-10-ones 1 rearrange to form 5,11-dihydro[2]benzopyran[4,3-b]indol-5-ones 8 when heated under acid conditions. Reaction of ninhydrin with 3-hydroxyaniline gave a benzo[b]indeno[2,1-d]furan 4.