Using a facile and cost-effective method, nine bicyclic 1,2,3-triazine 2-oxides were synthesized from o-aminocyanide substrates through an unusual nitration cyclization. The reaction mechanism was studied experimentally and theoretically. Moreover, nine 1,2,3-triazine 3-oxides were also obtained in good yields.
Facile and Versatile Route to the Synthesis of Fused 2‐Pyridones: Useful Intermediates for Polycyclic Sytems
作者:Giampiero Spalluto、Barbara Cacciari
DOI:10.1080/00397910500514063
日期:2006.5
The reaction of various heteroaromatic amino nitriles with diethyl malonate under basic conditions is reported. This reaction affords a series of different highly functionalized 2-pyridone condensed systems, which can be suitable intermediates in the construction of polyheterocyclic structures.
HAIDER, NORBERT;HEINISCH, GOTTFRIED;LASS. NIGG, DORRIS, J. HETEROCYCL. CHEM., 25,(1988) N 1, 119-124