A convenient,one step synthesis of pyrano[2,3-b]pyridines
作者:Nazario Martin、Carlos Seoane、José L. Soto
DOI:10.1016/s0040-4020(01)81443-5
日期:1988.1
A novel,one step synthesis of pyrano[2,3-b]pyri-dines from malononitrile and unsaturated ketones is reported. The reaction mechanism is discussed and takes place through an intermediate monocyclic 4H-pyran.Several derivatives with different substitution patterns are prepared.