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Synthesis of Spiranes by Cyclocondensation of 2-Phenacylbenzothiazole with Hydrazines ando-Hydroxybenzaldehydes

✍ Scribed by A. V. Vypirailenko; I. B. Dzvinchuk; M. O. Lozinskii

Book ID: 110432553
Publisher: Springer US
Year: 2003
Tongue: English
Weight: 123 KB
Volume: 39
Category: Article
ISSN: 0009-3122
DOI: 10.1023/a:1023089212894

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## Abstract magnified image 1‐Acetyl‐, 1‐propionyl‐ and 1‐phenyl‐3,5‐diaryl‐2‐pyrazolines have been synthesized by the reaction of the appropriate α,β‐unsaturated ketones with hydrazine or phenylhydrazine in hot acetic acid or propionic acid. Structures of all new 2‐pyrazolines **16‐40** have been