DERIVATIVES OF 3,4-DIHYDRO-3-THIOXO-2-QUINOXALINYLACETIC ACID
Ethyl 3,4-dihydro-4-methyl-3-thioxo-2-quinoxalinylacetate has been prepared by thionation of the 3-oxo derivative.The mechanism is discussed of the reaction of this ester with diethylamine giving the two non-isomerizing ketimine-enamine tautomers and 1,2-
Toman, Jaromir,Klicnar, Jiri
p. 419 - 428
(2007/10/02)
REGIOSELECTIVE SYNTHESIS OF 2,6-DICHLOROQUINOXALINE AND 2-CHLORO-6-IODOQUINOXALINE
Facile regioselective synthesis of 2,6-dichloroquinoxaline and 2-chloro-6-iodoquinoxaline is described.Electrophilic substitution reaction of 2(1H)-quinoxalinone with chloride and iodide ion in 95percent sulfuric acid occurred at 6-position exclusively.
Sakata, Gozyo,Makino, Kenzi
p. 323 - 326
(2007/10/02)
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