Purity | Size | Price | VIP Price | USA Stock *0-1 Day | Global Stock *5-7 Days | Quantity | ||||||
{[ item.p_purity ]} | {[ item.pr_size ]} | Inquiry |
{[ getRatePrice(item.pr_usd, 1,1,item.pr_is_large_size_no_price) ]} {[ getRatePrice(item.pr_usd,item.pr_rate,1,item.pr_is_large_size_no_price) ]} |
{[ getRatePrice(item.pr_usd, 1,1,item.pr_is_large_size_no_price) ]} | Inquiry {[ getRatePrice(item.pr_usd,item.pr_rate,item.mem_rate,item.pr_is_large_size_no_price) ]} {[ getRatePrice(item.pr_usd,1,item.mem_rate,item.pr_is_large_size_no_price) ]} | {[ item.pr_usastock ]} | in stock Inquiry - | {[ item.pr_chinastock ]} | {[ item.pr_remark ]} in stock Inquiry - | Login | Inquiry |
Please Login or Create an Account to: See VIP prices and availability
CAS No. : | 103646-82-8 | MDL No. : | MFCD00052944 |
Formula : | C11H10N4 | Boiling Point : | - |
Linear Structure Formula : | - | InChI Key : | MJQOLPWOOIMZDA-UHFFFAOYSA-N |
M.W : | 198.22 | Pubchem ID : | 2800424 |
Synonyms : |
|
Signal Word: | Warning | Class: | N/A |
Precautionary Statements: | P280-P305+P351+P338 | UN#: | N/A |
Hazard Statements: | H302 | Packing Group: | N/A |
GHS Pictogram: |
* All experimental methods are cited from the reference, please refer to the original source for details. We do not guarantee the accuracy of the content in the reference.
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
In ethanol; | EXAMPLE 18A 5-Amino-1-(4-methylphenyl)-1H-pyrazole-4-carboxamide In analogy to the preparation of Example 16A, 1.02 g (47percent of theory) of the desired product are obtained from 2 g (10.1 mmol) of <strong>[103646-82-8]5-amino-1-(4-methylphenyl)-1H-pyrazole-4-carbonitrile</strong> (Example 3A) in a mixture of 25 ml of ethanol, 20 ml of 30percent strength hydrogen peroxide and 40 ml of 25percent strength ammonia. LC-MS (Method 1): Rt=2.7 min. MS (ESI pos): m/z=217 (M+H)+. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
80% | In ethanol; for 2h;Reflux; | General procedure: A mixture of the appropriate phenylhydrazine (0.001 mol)and 10 mL of ethanol was stirred and allowed to reflux.Then, 2-(ethoxymethylene)malononitrile (0.001 mol) dissolvedin 10 mL of ethanol was slowly added. The reactionmixture was refluxed for 2 h. The reaction mixture waspoured into 50 mL of ice-cold water. The precipitate wascollected by filtration and washed with water to provide10a-c in 61-80% yield. |
80% | In ethanol; for 2h;Reflux; | General procedure: A mixture of the appropriate phenylhydrazine (0.001 mol) and10 mL of ethanol was stirred and allowed to reflux. Then, 2-(ethoxymethylene)malononitrile (0.001 mol) dissolved in 10 mL of ethanol was slowly added. The reaction mixture was refluxed for 2 h. The reaction mixture was poured into 50 mL of ice-cold water. The precipitate was collected by filtration and washed with water to produce 7-12 in 48-90% yield. |
In ethanol; for 3h;Reflux; | General procedure: A stirred mixture of para-substituted phenylhydrazine hydrochloride (0.025 mol) was dissolved inH2O (30 mL), then the pH of the mixture was adjusted to pH 7-8 by the dropwise addition of 10% NaOHsolution to form the free para-substituted phenyl hydrazines, which were then refluxed for 3 h withethoxymethylene malononitrile in an ethanol medium. After completion of the reaction, the reactionmixture was allowed to cool at room temperature, and the solid 2a-2d were filtered under vacuum. Thecrude products obtained were recrystallized from DMF to afford the pure products. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
80% | for 12h;Reflux; | General procedure: A mixture of 5-amino-1-phenyl-1H-pyrazole-4-carbonitriles (7-12)(0.01 mol) and 20 mL of formic acid was stirred and allowed to reflux for 12 h. The reaction mixture was poured into 50 mL of ice-cold water. The precipitate was collected by filtration and washed with water to produce 13-18 in 68-89% yield. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With triethylamine; | EXAMPLE 3A 5-Amino-1-(4-methylphenyl)-1H-pyrazole-4-carbonitrile In analogy to the preparation of Example 1A, 2.16 g (57percent of theory) of the desired product are obtained starting from 3 g (18.9 mmol) of 4-methylphenylhydrazine hydrochloride, 2.3 g (18.9 mmol) of ethoxymethylenemalononitrile and 7.9 ml (56.7 mmol) of triethylamine. LC-MS (Method 1): Rt=3.0 min. MS (ESI pos): m/z=199 (M+H)+. | |
General procedure: A stirred mixture of para-substituted phenylhydrazinehydrochloride (0.025 mol) was dissolved in H2O (30 mL), thenthe pH of the mixture was adjusted to pH 7?8 by the dropwiseaddition of 10percent NaOH solution to form the free para-substitutedphenyl hydrazines, which were then refluxed for 3 h with ethoxymethylene malononitrile in an ethanol medium. After completionof the reaction, the reaction mixture was allowed to cool at room temperature, and the solid were filtered under vacuum. The crudeproducts obtained were recrystallized from anhydrous ethanol togive the light yellow solid. |
[ 5334-43-0 ]
5-Amino-1-phenyl-1H-pyrazole-4-carbonitrile
Similarity: 0.94
[ 51516-70-2 ]
5-Amino-1-(4-fluorophenyl)-1H-pyrazole-4-carbonitrile
Similarity: 0.84
[ 5334-28-1 ]
5-Amino-1-(4-bromophenyl)-1H-pyrazole-4-carbonitrile
Similarity: 0.83
[ 51516-67-7 ]
5-Amino-1-(4-chlorophenyl)-1H-pyrazole-4-carbonitrile
Similarity: 0.82
[ 51516-68-8 ]
5-Amino-1-(3-chlorophenyl)-1H-pyrazole-4-carbonitrile
Similarity: 0.81
[ 5334-43-0 ]
5-Amino-1-phenyl-1H-pyrazole-4-carbonitrile
Similarity: 0.94
[ 51516-70-2 ]
5-Amino-1-(4-fluorophenyl)-1H-pyrazole-4-carbonitrile
Similarity: 0.84
[ 5334-28-1 ]
5-Amino-1-(4-bromophenyl)-1H-pyrazole-4-carbonitrile
Similarity: 0.83
[ 51516-67-7 ]
5-Amino-1-(4-chlorophenyl)-1H-pyrazole-4-carbonitrile
Similarity: 0.82
[ 51516-68-8 ]
5-Amino-1-(3-chlorophenyl)-1H-pyrazole-4-carbonitrile
Similarity: 0.81
[ 5334-43-0 ]
5-Amino-1-phenyl-1H-pyrazole-4-carbonitrile
Similarity: 0.94
[ 64096-91-9 ]
4H-Benzo[4,5]imidazo[1,2-b]pyrazole-3-carbonitrile
Similarity: 0.88
[ 51516-70-2 ]
5-Amino-1-(4-fluorophenyl)-1H-pyrazole-4-carbonitrile
Similarity: 0.84
[ 5334-28-1 ]
5-Amino-1-(4-bromophenyl)-1H-pyrazole-4-carbonitrile
Similarity: 0.83
[ 51516-67-7 ]
5-Amino-1-(4-chlorophenyl)-1H-pyrazole-4-carbonitrile
Similarity: 0.82
[ 5334-43-0 ]
5-Amino-1-phenyl-1H-pyrazole-4-carbonitrile
Similarity: 0.94
[ 51516-70-2 ]
5-Amino-1-(4-fluorophenyl)-1H-pyrazole-4-carbonitrile
Similarity: 0.84
[ 5334-28-1 ]
5-Amino-1-(4-bromophenyl)-1H-pyrazole-4-carbonitrile
Similarity: 0.83
[ 51516-67-7 ]
5-Amino-1-(4-chlorophenyl)-1H-pyrazole-4-carbonitrile
Similarity: 0.82
[ 51516-68-8 ]
5-Amino-1-(3-chlorophenyl)-1H-pyrazole-4-carbonitrile
Similarity: 0.81