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Reaction of piperidone enamines with methyl .beta.-vinylacrylate. A route to quinolines and isoquinolines

✍ Scribed by Danishefsky, S.; Cavanaugh, Robert

Book ID: 111860717
Publisher: American Chemical Society
Year: 1968
Tongue: English
Weight: 508 KB
Volume: 33
Category: Article
ISSN: 0022-3263
DOI: 10.1021/jo01271a078

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## Abstract The enaminones **1b,d,f** react with 4‐phenyl‐3‐methyl‐5‐pyrazoleamine **3a** to yield the pyrazole derivatives **4a‐c** that cyclised readily on reflux in pyridine solution in presence of hydrochloric acid to yield the pyrazolo[1,5‐__a__]pyrimidines **5a‐c.** Similarly 3(5)‐amino‐1__H_