Solid‐State Regioselective Cyclization Initiated by the Electrophilic Attack on the Double Bond by N‐Bromosuccinimide on Montmorillonite K‐10 Clay Support under Microwave Irradiation
摘要:
3-AllyI-4-hydroxy-coumarins and pyrones were regioselectively cyclized with N-bromosuccinimide (NBS) on solid phase under microwave irradiation in excellent yield. NBS on montmorillonite K-10 clay under microwave irradiation for expeditious solvent-free regioselective cyclization has been used for the first time.
A Green Synthesis of Angularly Fused Furano-Pyrone/Coumarin and Quinolone Derivatives via Molecular Iodine-Mediated 5-exo-trig Cyclization in Aqueous Micelles
作者:K. Majumdar、Debankan Ghosh、Shovan Mondal
DOI:10.1055/s-0030-1258394
日期:2011.2
A simple, economical, and green approach to the synthesis of angularly fused furano- pyrone/coumarin and quinolone derivatives by molecular iodine-mediated 5-exo-trig cyclization using sodium dodecyl sulfate (SDS) as surfactant in water is described.