Reaction of cyclohexanones imines with substituted nitroolefins. New synthesis of tetrahydroindole derivatives
摘要:
The Michael-type addition of cyclohexanones imines, reacting as their secondary enamine tautomers. to beta-substituted nitroolefins is followed by a cyclization reaction with elimination of the nitro group to afford substituted tetrahydroindoles. When a 2-methylcyclohexanone imine is reacted, an unexpected inversion of the regioselectivity is observed when compared with beta-substituted ethylenic eaters. thus allowing to obtain also substituted tetrahydroindoles (C) 1999 Published by Elsevier Science Ltd. All rights reserved.
Reaction of cyclohexanones imines with substituted nitroolefins. New synthesis of tetrahydroindole derivatives
摘要:
The Michael-type addition of cyclohexanones imines, reacting as their secondary enamine tautomers. to beta-substituted nitroolefins is followed by a cyclization reaction with elimination of the nitro group to afford substituted tetrahydroindoles. When a 2-methylcyclohexanone imine is reacted, an unexpected inversion of the regioselectivity is observed when compared with beta-substituted ethylenic eaters. thus allowing to obtain also substituted tetrahydroindoles (C) 1999 Published by Elsevier Science Ltd. All rights reserved.
Three-Component Ordered Annulation of Amines, Ketones, and Nitrovinylarenes: Access to Fused Pyrroles and Substituted Indoles under Metal-Free Conditions
作者:Jinjin Chen、Dan Chang、Fuhong Xiao、Guo-Jun Deng
DOI:10.1021/acs.joc.8b02410
日期:2019.1.18
An efficient synthesis of pyrroles and indoles has been developed via three-component ordered annulation of amines, ketones, and nitrovinylarenes. The reaction selectivity can be well controlled undermetal-freeconditions to afford the corresponding heterocyclic products in good yields.
Reaction of cyclohexanones imines with substituted nitroolefins. New synthesis of tetrahydroindole derivatives
作者:Sethy Lim、Ivan Jabin、Gilbert Revial
DOI:10.1016/s0040-4039(99)00708-x
日期:1999.5
The Michael-type addition of cyclohexanones imines, reacting as their secondary enamine tautomers. to beta-substituted nitroolefins is followed by a cyclization reaction with elimination of the nitro group to afford substituted tetrahydroindoles. When a 2-methylcyclohexanone imine is reacted, an unexpected inversion of the regioselectivity is observed when compared with beta-substituted ethylenic eaters. thus allowing to obtain also substituted tetrahydroindoles (C) 1999 Published by Elsevier Science Ltd. All rights reserved.