
Journal of the Chemical Society. Chemical communications p. 1937 - 1938 (1995)
Update date:2022-07-30
Topics:
Oshima, Takumi
Kawamoto, Tatsuya
Kuma, Hiro
Kushi, Yoshihiko
Nagai, Toshikazu
The X-ray crystal structure of the title dihydropyrazole indicates that the steric and ?-conjugative effects associated with the conformational locking of the two phenyl rings are the crucial factors in the predominance of 1,3-dipolar cycloreversion rather than nitrogen extrusion to give the cyclopropane derivative.
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