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Microwave-Assisted Three-Component Synthesis of 7-Aryl-2-alkylthio-4,7-dihydro-1,2,4-triazolo [1,5-a]pyrimidine-6-carboxamides and Their Selective Reduction.

✍ Scribed by Valentin A. Chebanov; Elena A. Muravyova; Sergey M. Desenko; Vladimir I. Musatov; Irina V. Knyazeva; Svetlana V. Shishkina; Oleg V. Shishkin; C. Oliver Kappe

Publisher: John Wiley and Sons
Year: 2006
Weight: 24 KB
Volume: 37
Category: Article
ISSN: 0931-7597
DOI: 10.1002/chin.200643178

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## Abstract The cyclocondensation of 6‐acetyl‐4,7‐dihydro‐5‐methyl‐7‐phenyl[1,2,4]triazolo[1,5‐__a__]pyrimidine (3) with hydroxylamine or hydrazine leads to 3a,4,9,9a‐tetrahydro‐3,9a‐dimethyl‐4‐phenylisoxazolo‐[5,4‐__d__][1,2,4]triazolo[1,5‐__a__]pyrimidine (4a) and 3a,4,9,9a‐tetrahydro‐3,9a‐dimeth