87929-20-2Relevant academic research and scientific papers
Novel Synthesis of Pyrazole and Pyrazoline Derivatives
Matsumura, Noboru,Kunugihara, Akira,Yoneda, Shigeo
, p. 1169 - 1172 (2007/10/02)
The 1,4-dianion of acetophenone N-ethoxycarbonylhydrazone reacts with carbonyl compounds such as esters, acyl chlorides, amides and α-haloketones such as phenacyl chloride, 1-chloroacetone, 1,3-dichloroacetone, to produce pyrazole and pyrazoline derivativ
1,4-DIANION OF ACETOPHENONE N-ETHOXYCARBONYLHYDRAZONE AS A SYNTHETIC INTERMEDIATE
Matsumura, Noboru,Kunugihara, Akira,Yoneda, Shigeo
, p. 3239 - 3242 (2007/10/02)
Various β-hydroxyketones and α,β-unsaturated ketones were prepared by the reaction of aldehydes and ketones with 1,4-dianion (2) which is derived from acetophenone N-ethoxycarbonylhydrazone (1) with butyllithium.In the reaction of 2 with carbonyl compounds such as ester, amide, acid anhydride, acyl chloride, and alkyl carbonate, pyrazole derivatives were obtained in good yields.
