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The substitution reaction of pyrazine-2,3-dicarbonitrile derivatives with ammonia, amines, water and alcohols

โœ Scribed by Hideki Hirano; Rachel Lee; Masaru Tada

Book ID
112126926
Publisher
Journal of Heterocyclic Chemistry
Year
1982
Tongue
English
Weight
371 KB
Volume
19
Category
Article
ISSN
0022-152X

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Reaction of deacetylcolchicine (2) and colchifoline (3) with diacetyldihydrofluorescein (1, DADF) afforded the corresponding amide and ester derivatives, converted on TLC-plates after exposure to ammonia and iodine vapors into red colored pigments. This reaction, also observed with DADF-derivatives