Iodine-Mediated Intramolecular Electrophilic Aromatic Cyclization in Allylamines: A General Route to Synthesis of Quinolines, Pyrazolo[4,3-b]pyridines, and Thieno[3,2-b]pyridines
摘要:
An unprecedented synthesis of aromatic ring annulated pyridines from suitably substituted primary allylamines via intramolecular electrophilic aromatic cyclization mediated by molecular iodine under mild conditions is described.
Iodine-Mediated Intramolecular Electrophilic Aromatic Cyclization in Allylamines: A General Route to Synthesis of Quinolines, Pyrazolo[4,3-b]pyridines, and Thieno[3,2-b]pyridines
摘要:
An unprecedented synthesis of aromatic ring annulated pyridines from suitably substituted primary allylamines via intramolecular electrophilic aromatic cyclization mediated by molecular iodine under mild conditions is described.
Isonitriles from the Baylis–Hillman adducts of acrylates: viable precursor to tetrazolo-fused diazepinones via post-Ugi cyclization
作者:Maloy Nayak、Sanjay Batra
DOI:10.1016/j.tetlet.2009.11.051
日期:2010.1
Stereocontrolled synthesis of substituted isonitriles from the Baylis-Hillman adducts of acrylates has been developed. Ugi reaction of these isonitriles with TMSN3, aliphatic amines, and aldehydes or ketone affords 1-substituted tetrazoles which have been demonstrated to be suitable substrates for producing tetrazolo-fused diazepinones. (C) 2009 Elsevier Ltd. All rights reserved.