17647-23-3Relevant academic research and scientific papers
PYRAZOLE SYNTHESIS BY COUPLING OF CARBOXYLIC ACID DERIVATIVES AND ENAMINES
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Paragraph 0139-0140, (2013/03/26)
The invention describes a novel process for synthesizing pyrazoles by means of oxidative conversion of enamines with suitable N-containing carboxylic acid derivatives.
Efficient synthesis of pyrazoles: Oxidative C-C/N-N bond-formation cascade
Neumann, Julia J.,Suri, Mamta,Glorius, Frank
supporting information; experimental part, p. 7790 - 7794 (2011/01/09)
Golden section: A novel synthetic strategy for the synthesis of tetrasubstituted pyrazoles is provided. In an efficient C-C/N-N bond-formation cascade, enamines and nitriles are oxidatively coupled to deliver pyrazoles in good yields (see scheme). The rea
One-pot synthesis of functionalized 3-aryl-1-phenyl-1H-pyrazoles from hydrazonoyl chlorides and acetylenic esters in the presence of Ph3P
Yavari, Issa,Khalili, Gholamhossein,Mirzaei, Anvar
experimental part, p. 277 - 280 (2010/05/15)
The zwitterionic 1 :1 intermediates generated by addition of Ph 3P to acetylenic esters is trapped by 1-[(aryl)chloromethylene]-2- phenylhydrazines (=N-phenylarenecarbohydrazonoyl chlorides) to yield functionalized 3-aryl-1-phenyl-1H-pyrazoles
Aminomethylene ketones and enamines in heterocyclic synthesis: Synthesis of functionally substituted pyridine, pyrazole, fused pyrimidine and fused [1,5]diazocine derivatives
Hassanien, Abu Zeid A.,Mohamed, Mona H.,Gohzlan, Said A.S.
, p. 440 - 445 (2007/10/03)
Methyl 2-benzoyl-3-dimethylaminopropenoate (2) and 2-(benzimidazo-2-yl)-3- dimethylaminoacrylonitrile (27) were condensed with various type of reagents under different conditions to afford new acyclic, cyclic and fused heterocyclic derivatives.
1,3-Dipolar Cycloadditions, 89. New Contributions to the Chemistry of Diphenylnitrilimine
Clovis, James S.,Fliege, Werner,Huisgen, Rolf
, p. 3062 - 3070 (2007/10/02)
Methyl propiolate, tetrolate, and phenylpropiolate combine with diphenylnitrilimine (1) to afford regioisomeric cycloadducts; the preferential orientation shifts in the sequence given from the pyrazole-5-carboxylic ester to the 4-carboxylic ester.Correspo
