abstract |
PROCEDURE FOR THE PREPARATION OF 1,4-DICETO-PIRROLO3,4-C-PIRROLES, OF GENERAL FORMULA (I), IN WHICH R1 AND R2 INDEPENDENTLY MEAN, ISOCYCLIC OR HETEROCICLIC RADICALS. OF SUCCINIC ACID, WITH TWO MOLES OF A NITRILE FORMULA: R1-CN OR R2-CN, WHERE R1 AND R2 HAVE THE MEANINGS ALREADY MENTIONED, IN AN ORGANIC SOLVENT AND IN THE PRESENCE OF A STRONG BASE. . |