Bulletin of the Chemical Society of Japan p. 1429 - 1433 (1981)
Update date:2022-09-26
Topics:
Oida, Tatsuo
Shimizu, Tomio
Hayashi, Yoshiyuki
Teramura, Kazuhiro
The cycloaddition of nitrimines with 1,2-dibenzoylethylenes gave an unexpected 1,3-diaryl-4-benzoylpyrazole and benzoic acid, along with an expected cycloadduct, 1,3-diaryl-4,5-dibenzoyl-2-pyrazoline, and its dehydrogenated product, 1,3-diaryl-4,5-dibenzoylpyrazole.The elimination of the benzoyl group from the pyrazoline followed by dehydrogenation was shown to be the course of the unusual reaction.
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