Synthesis of substituted carbazoles via electrocyclization of in situ generated enamines from 1-phenylsulfonyl-2/(3)-methyl-3/(2)-vinylindoles and DMF·DMA/DMA·DMA
作者:Radhakrishnan Sureshbabu、Ramalingam Balamurugan、Arasambattu K. Mohanakrishnan
DOI:10.1016/j.tet.2009.03.010
日期:2009.5
Interaction of 2/(3)-methyl-3/(2)-vinylindoles and DMF center dot DMA/DMA center dot DMA at 110 degrees C led to the in situ generation of enamines, which on concurrent electrocyclization followed by subsequent aromatization afforded substituted carbazoles. (C) 2009 Elsevier Ltd. All rights reserved.
A facile preparation of N-protected indolaldehydes using a modified Hass procedure
作者:Arasambattu K. Mohanakrishnan、Ramalingam Balamurugan、Neelamegam Ramesh
DOI:10.1016/j.tetlet.2005.09.121
日期:2005.11
The preparation of a variety of N-protected indolaldehydes is reported via the reaction of N-protected bromomethylindoles with 2-nitropropane using NaH/DMF.
Stille carbonylation of N-protected bromomethylindoles
作者:Arasambattu K. Mohanakrishnan、Neelamegam Ramesh
DOI:10.1016/j.tetlet.2005.05.010
日期:2005.7
A variety of N-protected indolylmethyl bromides are carbonylated using 5 mol % Pd(PPh3)(2)Cl-2 under Stille conditions in the presence of an alcohol to afford the corresponding methyl/ethyl esters. (c) 2005 Elsevier Ltd. All rights reserved.