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. : | 15001-11-3 | MDL No. : | MFCD00973936 |
Formula : | C13H15N3O2 | Boiling Point : | No data available |
Linear Structure Formula : | - | InChI Key : | HYLAFESEWXPMFD-UHFFFAOYSA-N |
M.W : | 245.28 | Pubchem ID : | 703785 |
Synonyms : |
|
Signal Word: | Warning | Class: | |
Precautionary Statements: | P261-P305+P351+P338 | UN#: | |
Hazard Statements: | H302-H315-H319-H335 | Packing Group: | |
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 |
---|---|---|
85% | With triethylamine; In ethanol; at 20 - 80℃; for 8.0h; | General procedure: To ethyl 2-cyano-3-ethoxyacrylate (2.00 g, 11.8 mmol) and 4-methoxyphenyl hydrazine hydrochloride (2.06 g, 11.8 mmol) in ethanol (75 mL) at room temperature was added triethylamine (1.65 mL, 11.8 mmol). The mixture was stirred at 80 C for 8 h. After cooling the reaction mixture to room temperature, ethanol was removed in vacuo and the residue was partitioned between ethyl acetate and water. The organic layer was dried over magnesium sulfate. The solvent was evaporated in vacuo and the residue was chromatographed on a silica gel column with a mixture of n-hexane and ethyl acetate (3:1) to give the desired product 2b (2.42 g, 78 %). 1H NMR (300 MHz, CDCl3): delta=7.76 (s, 1H), 7.42 (d, J=6.9Hz, 2H), 7.01 (d, J=6.9Hz, 2H), 5.19 (br s, 2H), 4.30 (q, J=7.1Hz, 2H), 3.82 (s, 3H), 1.36 (t, J=7.1Hz, 3H) ppm; MS (ESI): m/z: 262 [M+H+]. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
43% | With hydrogenchloride; In 1,4-dioxane; at 100℃; for 14.0h; | General procedure: To ethyl 5-amino-1-phenyl-1H-pyrazole-4-carboxylate (2a, 1.60 g, 6.92 mmol) in 4N HCl in 1,4-dioxane (35 mL) at room temperature was added methyl cyanoformate (1.77 g, 20.8 mmol). The mixture was stirred at 100 C for 14 h and was cooled to room temperature. After 1,4-dioxane was removed in vacuo and the residue was partitioned between methylene chloride and water. The organic layer was dried over magnesium sulfate and was evaporated in vacuo. The residue was chromatographed on a silica gel column with a mixture of methylene chloride and ethyl acetate (7:1) to give the desired product 3a (1.47 g, 78 %). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
86% | With pyridine; trichlorophosphate; | General procedure: Intermediate 4 (0.001mol) and 5 (0.001mol) were dissolved in pyridine, phosphorus oxychloride is slowly added dropwise under ice bath conditions, then at 40-60C reacted for 5-8h. Finally, the mixture was poured into 30mL saturated Na2CO3 solution and stirred well. After the mixture was acidified, the saturated CuSO4 solution was used to remove pyridine, which greatly improved the purity and yield of the product. The data for compounds 8I-8VI are provided in the supporting information. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With water; In ethanol;Reflux; | General procedure: Intermediates 13 6 was synthesized according to the literature by ML Bender [28]. Intermediates 5 was dissolved in a solution of 15 ethanol and 16 potassium hydroxide and refluxed for 2h. After cooling, the pH of the mixture was adjusted to 5-6by the dropwise addition of 10% 17 HCl solution to give an intermediate 13 6, which was filtered under vacuum and recrystallized from ethanol to give the pure products. |
[ 16078-71-0 ]
Ethyl 5-amino-1-phenyl-1H-pyrazole-4-carboxylate
Similarity: 0.95
[ 138907-68-3 ]
Ethyl 5-amino-1-(4-fluorophenyl)-1H-pyrazole-4-carboxylate
Similarity: 0.87
[ 16459-35-1 ]
Ethyl 5-amino-1-(4-nitrophenyl)-1H-pyrazole-4-carboxylate
Similarity: 0.85
[ 14678-87-6 ]
Ethyl 5-amino-1-(4-chlorophenyl)-1H-pyrazole-4-carboxylate
Similarity: 0.85
[ 618070-65-8 ]
Ethyl 5-amino-1-(2-fluorophenyl)-1H-pyrazole-4-carboxylate
Similarity: 0.84
[ 16078-71-0 ]
Ethyl 5-amino-1-phenyl-1H-pyrazole-4-carboxylate
Similarity: 0.95
[ 138907-68-3 ]
Ethyl 5-amino-1-(4-fluorophenyl)-1H-pyrazole-4-carboxylate
Similarity: 0.87
[ 16459-35-1 ]
Ethyl 5-amino-1-(4-nitrophenyl)-1H-pyrazole-4-carboxylate
Similarity: 0.85
[ 14678-87-6 ]
Ethyl 5-amino-1-(4-chlorophenyl)-1H-pyrazole-4-carboxylate
Similarity: 0.85
[ 618070-65-8 ]
Ethyl 5-amino-1-(2-fluorophenyl)-1H-pyrazole-4-carboxylate
Similarity: 0.84
[ 16078-71-0 ]
Ethyl 5-amino-1-phenyl-1H-pyrazole-4-carboxylate
Similarity: 0.95
[ 138907-68-3 ]
Ethyl 5-amino-1-(4-fluorophenyl)-1H-pyrazole-4-carboxylate
Similarity: 0.87
[ 16459-35-1 ]
Ethyl 5-amino-1-(4-nitrophenyl)-1H-pyrazole-4-carboxylate
Similarity: 0.85
[ 14678-87-6 ]
Ethyl 5-amino-1-(4-chlorophenyl)-1H-pyrazole-4-carboxylate
Similarity: 0.85
[ 618070-65-8 ]
Ethyl 5-amino-1-(2-fluorophenyl)-1H-pyrazole-4-carboxylate
Similarity: 0.84
[ 16078-71-0 ]
Ethyl 5-amino-1-phenyl-1H-pyrazole-4-carboxylate
Similarity: 0.95
[ 138907-68-3 ]
Ethyl 5-amino-1-(4-fluorophenyl)-1H-pyrazole-4-carboxylate
Similarity: 0.87
[ 16459-35-1 ]
Ethyl 5-amino-1-(4-nitrophenyl)-1H-pyrazole-4-carboxylate
Similarity: 0.85
[ 14678-87-6 ]
Ethyl 5-amino-1-(4-chlorophenyl)-1H-pyrazole-4-carboxylate
Similarity: 0.85
[ 618070-65-8 ]
Ethyl 5-amino-1-(2-fluorophenyl)-1H-pyrazole-4-carboxylate
Similarity: 0.84