
TY  - JOUR
A1  - Deady, Leslie W. 
A1  - Kaye, Anthony J. 
T1  - Fused Tetracyclic Quinoxalines from Reactions of <emph type="2">o</emph>-Phenylenediamines in Polyphosphoric Acid
JF  - Australian Journal of Chemistry
JO  - Aust. J. Chem.
Y1  - 1997
VL  - 50
IS  - 5
SP  - 473
EP  - 478
KW  - 
UR  - https://doi.org/10.1071/C96170 
N2  - The condensation of 2,3-diaminobenzoic acid and the 5-chloro derivative with o-hydroxyphenylglyoxylic acid, isatin and benzothiophen-2,3-dione in polyphosphoric acid leads to the appropriate tetracycles. Isomeric products are formed from these unsymmetrical diamines, and methods of assigning particular structures are described. 
ER  -

