Intramolecular Diels-Alder reactions of 1,2,4-triazines: Synthesis of tricyclic condensed pyridines and pyrazines
作者:Edward C. Taylor、Larry G. French
DOI:10.1016/s0040-4039(00)84423-8
日期:1986.1
Syntheses of several 6,6,6-tricyclic condensed pyridines and pyrazines utilizing intramolecularDiels-Alderreactions of 1,2,4-triazines with alkyne and nitrile dienophiles are detailed. The cyclizations are facilitated by the presence of conformationally restrictive planar aromatic rings in the chain tethering the diene and the dienophile.