62984-12-7Relevant academic research and scientific papers
Synthesis and cyclization reaction of pyrazolin-5-one derivatives
Jung, Jae-Chul,Blake Watkins,Avery, Mitchell A.
, p. 77 - 94 (2007/10/03)
A versatile synthetic method for preparing 3-pyrazolin-5-ones and 5,8-dihydro-1H-pyrazolo[1,2-a]pyridazines from simple β-keto esters is demonstrated. The synthetic strategies involve the acylation of β-keto esters, cyclocondensation with hydrazine followed by trapping with a diene under oxidative conditions.
Efficient synthesis of 4-ethoxycarbonyl pyrazolin-5-one derivatives
Jung, Jae C.,Watkins, E Blake,Avery, Mitchell A.
, p. 3767 - 3777 (2007/10/03)
Concise and efficient methods for the preparation of 3-substituted 4-ethoxycarbonylpyrazolin-5-ones are described. The synthetic strategies involve carbon-acylation in the presence of base, followed by ring cyclization with hydrazine or hydrazine monohydrochloride.
Reactions of Phosphorus Compounds. 40. Alkylation and Acylation Reactions of Triphenylphosphonium 2-propylide. Examination of the Anomalous Pyridazine and Pyrazole Products from the Benzoylation Reaction
Schweizer, Edward E.,Lee, Kee-Jung
, p. 2768 - 2773 (2007/10/02)
The title compound has been alkylated with methyl iodide, allyl bromide, and benzyl chloride, in acetonitrile, to give the corresponding salts.The title compound has benn acylated with benzoyl chloride and ethyl chloroformate, in benzene, to give the corr
