Unusual synthesis of dihydropyrido[2,1-a]isoindolone derivatives by radical cyclization of enamides of Baylis–Hillman adducts
摘要:
During the radical cyclization of enamide derivatives 4 we found unusual formation of dihydropyrido[2,1-a]isoindolone derivatives 5. The enamides were synthesized in four steps from the Baylis-Hillman adducts of ortho-bromobenzaldehydes. (c) 2007 Elsevier Ltd. All rights reserved.
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.
Alternate, Easy and Practical Synthesis of Allylamines from Acetyl Derivatives of Baylis-Hillman Adducts Using Methanolic Ammonia
作者:Sanjay Batra、Richa Pathak、Vijay Singh、Som N. Nag、Sanjeev Kanojiya
DOI:10.1055/s-2006-926337
日期:——
A methanolic ammonia-mediated alternate, easy and practical stereoselective synthesis of allyl amines from the acetyl derivatives of Baylis-Hillman adducts is described.