Aqueous-phase Suzuki-Miyaura cross-coupling reactions of free halopurine bases
The Suzuki-Miyaura reaction of 9-unsubstituted 2-, 6-, and 8-halopurine bases with diverse aryl- and alkenylboronic acids in water-acetonitrile mixtures under microwave irradiation was used for the single-step synthesis of arylpurines. In most cases the p
Capek, Petr,Vrabel, Milan,Hasnik, Zbynek,Pohl, Radek,Hocek, Michal
Triazines and Related Products. Part 24. Synthesis of Pyrazol-4-ylidenehydrazinoimidazoles by Hydrazinolysis of Imidazotriazines and 2-Arylazoimidazoles by Diazonium Coupling Reactions
4-(Substituted)imidazotriazine-8-carboxamides with ester, ketone, or cyano-groups in the 3-position undergo ring-opening with hydrazine and phenylhydrazine to yield substituted (pyrazol-4-ylidenehydrazino)imidazole-4-carboxamides.In some cas
Baig, Ghouse Unissa,Stevens, Malcolm F. G.,Stone, Robert
p. 1811 - 1820
(2007/10/02)
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