Synthesis and Herbicidal Activity of 1,5-Diarylpyrazole Derivatives.

Kudo, Noriaki; Furuta, Satoru; Taniguchi, Misa; Endo, Takeshi; Sato, Kazuo

doi:10.1248/cpb.47.857

Cited by 35 publications

(18 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Reaction of 2,4‐dioxocarboxylate 39 with alkylhydrazines gave a mixture of 1,5‐disubstituted pyrazoles 40 and 1,3‐disubstituted pyrazoles 41 (major isomer) in high yields (Scheme ) .…”

Section: Synthetic Methodsmentioning

confidence: 99%

Synthetic Routes to Pyrazole‐3(5)‐carboxylates

Khidre

Abdel‐Wahab

Farahat

et al. 2015

Journal of Heterocyclic Chem

View full text Add to dashboard Cite

show abstract

Section: Synthetic Methodsmentioning

confidence: 99%

Synthetic Routes to Pyrazole‐3(5)‐carboxylates

Khidre

Abdel‐Wahab

Farahat

et al. 2015

Journal of Heterocyclic Chem

View full text Add to dashboard Cite

show abstract

“…It is widely known that arylhydrazines are useful intermediates for preparation of a wide range of organic compounds. They are used in Fisher indole synthesis and for preparation of many biologically active compounds . The preparation of arylhydrazines via reduction of arenediazonium salts has become of great importance in the field of organic synthesis.…”

Section: Introductionmentioning

confidence: 99%

One‐pot Method for Reduction of Pyrazolo[5,1‐c][1,2,4]Triazine‐7‐diazonium Tetrafluoroborate to 7‐Hydrazinyl Derivatives

Иванов

Шестопалов

Mironovich

et al. 2017

Journal of Heterocyclic Chem

View full text Add to dashboard Cite

New convenient one‐pot method for reduction of hetarenediazonim tetrafluoroborates to the hetarylhydrazine derivatives was developed. Interaction of 8‐carboxyethyl‐3‐(tert‐butyl)‐4‐oxo‐4,6‐dihydropyrazolo[5,1‐c][1,2,4]triazine‐7‐diazonium tetrafluoroborate with anhydrous SnCl2 in anhydrous CF3CO2H, and further sequence of one‐pot operations led to formation of various derivatives of the unstable ethyl 3‐(tert‐butyl)‐7‐hydrazinyl‐4‐oxo‐4,6‐dihydropyrazolo[5,1‐c][1,2,4]triazine‐8‐carboxylate (hydrochloride, hydrazides, hydrazones, and pyrazoles), which were isolated in high yields. The anhydrous conditions were first used with SnCl2 and allowed to exclude hydrolysis of the ester group and formation of the by‐products.

show abstract

“…Pyrazole and its derivatives have remained as an active area of research due to its extensive applications in agrochemical and pharmaceutical industries [7]. Pyrazole derivatives have expressed their importance, since they have been found as constituent of variety of natural products such as withasomnine, pyrazofurin, formycin, fluviol and many others [8].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Novel Pyrazolylmethylene-Pyrimidine Heterocycles: Potential Synthons for Hybrid Β-Lactams

2015

Can Chem Trans

View full text Add to dashboard Cite

Diversely substituted novel pyrazolylmethylene-pyrimidine heterocycles were synthesized via Knoevenagel condensation between substituted formyl pyrazoles and barbituric acids without any base or solid catalyst. All these thirteen novel heterocycles were characterized by FT-IR, NMR spectroscopy ( 1 H, 13 C), 13 C DEPT-135, 1 H- 13C HSQC, elemental analysis and mass spectrometry (in representative case).

show abstract

Synthesis and Herbicidal Activity of 1,5-Diarylpyrazole Derivatives.

Cited by 35 publications

References 0 publications

Synthetic Routes to Pyrazole‐3(5)‐carboxylates

Synthetic Routes to Pyrazole‐3(5)‐carboxylates

One‐pot Method for Reduction of Pyrazolo[5,1‐c][1,2,4]Triazine‐7‐diazonium Tetrafluoroborate to 7‐Hydrazinyl Derivatives

Synthesis of Novel Pyrazolylmethylene-Pyrimidine Heterocycles: Potential Synthons for Hybrid Β-Lactams

Contact Info

Product

Resources

About