ChemInform Abstract: A Concise One-Pot Synthesis of 3,4-Diaryl-1H-pyrazoles from Natural Isoflavones and Hydrazine Hydrate.

ChemInform ◽  
2008 ◽  
Vol 39 (10) ◽  
Author(s):  
Zun-Ting Zhang ◽  
Da-Jin Tan ◽  
Dong Xue
Keyword(s):  
Hydrazine Hydrate ◽  
One Pot ◽  
One Pot Synthesis

One-pot synthesis of sulfonylhydrazones from sulfonyl chloride, hydrazine hydrate and vinyl azide in water

2021 ◽  
Author(s):  
Mengqiang Luo ◽  
Hai Wang ◽  
Xiaorong Ren ◽  
Ruijuan Lu ◽  
Chenze Qi ◽  
...  
Keyword(s):  
Hydrazine Hydrate ◽  
Sulfonyl Chloride ◽  
One Pot ◽  
One Pot Synthesis

One-pot synthesis of β-ketosulfones from sulfonyl chloride, hydrazine hydrate and vinyl azide in water

Tetrahedron ◽  
2020 ◽  
Vol 76 (48) ◽  
pp. 131635
Author(s):  
Yaohong Zhang ◽  
Mengqiang Luo ◽  
Yan Li ◽  
Runfu Shen ◽  
Chenze Qi ◽  
...  
Keyword(s):  
Hydrazine Hydrate ◽  
Sulfonyl Chloride ◽  
One Pot ◽  
One Pot Synthesis

A Novel and Convenient Synthesis of 3-Amino-2H-1,2,4-Triazoles from Isoselenocyanates and Hydrazine Hydrate

2018 ◽  
Vol 42 (5) ◽  
pp. 255-259
Author(s):  
Xue Li ◽  
Zhixiang Peng ◽  
Yuanyuan Zhang ◽  
Jiangwei Wang ◽  
Bin Gan ◽  
...  
Keyword(s):  
Hydrazine Hydrate ◽  
Aromatic Amine ◽  
Atom Economy ◽  
One Pot ◽  
One Pot Synthesis ◽  
Convenient Synthesis ◽  
Plausible Mechanism

A novel and convenient one-pot synthesis of 3-amino-2 H-1,2,4-triazoles from two molecules of isoselenocyanates and hydrazine hydrate via cyclodeselenisation was developed. Various 3-amino-2 H-1,2,4-triazoles were obtained in moderate to good yields (33–45%, based on isoselenocyanates). The selenium powder and aromatic amine side products during the reaction could be recycled for efficient preparation of isoselenocyanates, which improved the atom economy. A plausible mechanism was proposed for the formation of the target products.

One pot synthesis of aromatic azide using sodium nitrite and hydrazine hydrate

2013 ◽  
Vol 54 (10) ◽  
pp. 1294-1297 ◽  
Author(s):  
Afsar Ali Siddiki ◽  
Balaram S. Takale ◽  
Vikas N. Telvekar
Keyword(s):  
Hydrazine Hydrate ◽  
Sodium Nitrite ◽  
One Pot ◽  
One Pot Synthesis ◽  
Aromatic Azide

An Efficient Protocol for the Synthesis of pyrazolo[1,5-c]quinazolines via Staudinger-Aza-Wittig-Dehydroaromatization Sequence

Synlett ◽  
2021 ◽  
Author(s):  
Mingxian Xu ◽  
An Chen ◽  
Zhilin Ren ◽  
Jiying Qiu ◽  
Mingming Zu ◽  
...  
Keyword(s):  
Hydrazine Hydrate ◽  
Acyl Chloride ◽  
One Pot ◽  
One Pot Synthesis

One-pot synthesis of azide-substituted dihydropyrazoles in isopropanol was performed using chalcones, hydrazine hydrate, and acyl chloride at 0℃, and its subsequent Staudinger-aza-Wittig-dehydroaromatization reactions with methyldiphenylphosphine were also investigated for further application in the construction of pyrazolo[1,5-c]quinazolines.

scholarly journals One-pot synthesis of functionalized pyrazolo[3,4-c]pyrazoles by reaction of 2-cyano-N-methyl-acrylamide, aryl aldehyde, and hydrazine hydrate

ARKIVOC ◽  
2020 ◽  
Vol 2020 (6) ◽  
pp. 238-246
Author(s):  
Sara Asadi ◽  
Farzaneh Alizadeh-Bami ◽  
Hossein Mehrabi
Keyword(s):  
Hydrazine Hydrate ◽  
One Pot ◽  
One Pot Synthesis ◽  
Aryl Aldehyde

Two Efficient One-Pot Approaches for Regioselective Synthesis of New 3-Arylpyridazino[4,3-c]quinolin-5(6H)-ones

2015 ◽  
Vol 68 (10) ◽  
pp. 1529 ◽  
Author(s):  
Mehdi Rimaz
Keyword(s):  
Hydrazine Hydrate ◽  
Regioselective Synthesis ◽  
Reaction Conditions ◽  
One Pot ◽  
One Pot Synthesis ◽  
Three Component Reaction ◽  
The One ◽  
High Yields ◽  
Arylglyoxal Monohydrates ◽  
Operational Simplicity

Two efficient regioselective approaches for the one-pot synthesis of 3-arylpyridazino[4,3-c]quinolin-5(6H)-one derivatives are reported, by the three-component reaction of arylglyoxal monohydrates, quinoline-2,4-diol, and hydrazinium dihydrochloride or hydrazine hydrate in ethanol and pyridine. In ethanol, the reactions were catalyzed by 1,4-diazobicyclo[2,2,2]octane. The features of both procedures are high regioselectivity, mild reaction conditions, good to high yields, and operational simplicity.

A Concise One-Pot Synthesis of 3,4-Diaryl-1H-pyrazoles from Natural Isoflavones and Hydrazine Hydrate

2007 ◽  
Vol 90 (11) ◽  
pp. 2096-2108 ◽  
Author(s):  
Zun-Ting Zhang ◽  
Da-Jin Tan ◽  
Dong Xue
Keyword(s):  
Hydrazine Hydrate ◽  
One Pot ◽  
One Pot Synthesis

ChemInform Abstract: One Pot Synthesis of Aromatic Azide Using Sodium Nitrite and Hydrazine Hydrate.

ChemInform ◽  
2013 ◽  
Vol 44 (23) ◽  
pp. no-no
Author(s):  
Afsar Ali Siddiki ◽  
Balaram S. Takale ◽  
Vikas N. Telvekar
Keyword(s):  
Hydrazine Hydrate ◽  
Sodium Nitrite ◽  
One Pot ◽  
One Pot Synthesis ◽  
Aromatic Azide
Sign in / Sign up

Export Citation Format

Share Document