83467-26-9Relevant articles and documents
REARRANGEMENTS AND CYCLIZATIONS - XIV. RING-OPENING REACTIONS OF 1,1-DIACETYLCYCLOPROPANE WITH HYDRAZINE AND HYDROXYLAMINE DERIVATIVES AS THE NOVEL SYNTHESIS OF Β-X-ETHYL SUBSTITUTED PYRAZOLES AND ISOXAZOLES
Zefirov, Nikolai S.,Kozhushkov, Sergei I.,Kuznetsova, Tamara S.
, p. 1693 - 1697 (2007/10/02)
The reactions of 1,1-diacetylcyclopropane (1) with a number of hydrazine and hydroxylamine derivatives proceed via cyclopropane ring opening with incorporation of external nucleophile (solvent) to give the 4-β-X-ethyl derivatives of 3,5-dimethylpyrazoles