Citation: Qian CHENG, Xiao Tian LIANG, Jingle Xi XIE. Unusual Aromatization of 9-methyl-6-oxo-5-tosyl-6a, 7, 8, 10a-tetrahydroinden[2,3-b]indole[J]. Chinese Chemical Letters, ;1996, 7(10): 898-899. shu

Unusual Aromatization of 9-methyl-6-oxo-5-tosyl-6a, 7, 8, 10a-tetrahydroinden[2,3-b]indole

Institute of Materia Medica Chinese Academy of Medical Sciences & paking Uuion Medical College Beijing 100050

Received Date: 2 April 1996

Fund Project: The authors gratefully acknowledge the Department of Instrumental Analysis of our Institute for spectroscopic measurements.

9-Methyl-6-oxo-5-tosyl-6a,7,8,10a-tetrahydroindeno[2,3,b]indole (Ⅱ) was aromatized by PPE, CF₃COOH or BF₃·Et₂O to furnish the new compound, 9-methyl-5-tosyl-6H-indeno[2,3,b]indole (Ⅷ), involving an unusual"dehydration";the loss of two H's and concomitant exocyclic (to the aromatized carbocycle) removal of the carbonylic oxygen.
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