Structure of 4-Chlorophenylhydrazine HCl
CAS No.: 1073-70-7
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CAS No. : | 1073-70-7 |
Formula : | C6H8Cl2N2 |
M.W : | 179.05 |
SMILES Code : | NNC1=CC=C(Cl)C=C1.[H]Cl |
MDL No. : | MFCD00012943 |
InChI Key : | YQVZREHUWCCHHX-UHFFFAOYSA-N |
Pubchem ID : | 71600 |
GHS Pictogram: |
![]() |
Signal Word: | Warning |
Hazard Statements: | H302+H312+H332 |
Precautionary Statements: | P280 |
Num. heavy atoms | 10 |
Num. arom. heavy atoms | 6 |
Fraction Csp3 | 0.0 |
Num. rotatable bonds | 1 |
Num. H-bond acceptors | 1.0 |
Num. H-bond donors | 2.0 |
Molar Refractivity | 45.62 |
TPSA ? Topological Polar Surface Area: Calculated from |
38.05 ?2 |
Log Po/w (iLOGP)? iLOGP: in-house physics-based method implemented from |
0.0 |
Log Po/w (XLOGP3)? XLOGP3: Atomistic and knowledge-based method calculated by |
2.13 |
Log Po/w (WLOGP)? WLOGP: Atomistic method implemented from |
2.24 |
Log Po/w (MLOGP)? MLOGP: Topological method implemented from |
2.29 |
Log Po/w (SILICOS-IT)? SILICOS-IT: Hybrid fragmental/topological method calculated by |
1.01 |
Consensus Log Po/w? Consensus Log Po/w: Average of all five predictions |
1.53 |
Log S (ESOL):? ESOL: Topological method implemented from |
-2.67 |
Solubility | 0.383 mg/ml ; 0.00214 mol/l |
Class? Solubility class: Log S scale |
Soluble |
Log S (Ali)? Ali: Topological method implemented from |
-2.56 |
Solubility | 0.493 mg/ml ; 0.00275 mol/l |
Class? Solubility class: Log S scale |
Soluble |
Log S (SILICOS-IT)? SILICOS-IT: Fragmental method calculated by |
-2.68 |
Solubility | 0.373 mg/ml ; 0.00208 mol/l |
Class? Solubility class: Log S scale |
Soluble |
GI absorption? Gatrointestinal absorption: according to the white of the BOILED-Egg |
High |
BBB permeant? BBB permeation: according to the yolk of the BOILED-Egg |
Yes |
P-gp substrate? P-glycoprotein substrate: SVM model built on 1033 molecules (training set) |
No |
CYP1A2 inhibitor? Cytochrome P450 1A2 inhibitor: SVM model built on 9145 molecules (training set) |
No |
CYP2C19 inhibitor? Cytochrome P450 2C19 inhibitor: SVM model built on 9272 molecules (training set) |
No |
CYP2C9 inhibitor? Cytochrome P450 2C9 inhibitor: SVM model built on 5940 molecules (training set) |
No |
CYP2D6 inhibitor? Cytochrome P450 2D6 inhibitor: SVM model built on 3664 molecules (training set) |
No |
CYP3A4 inhibitor? Cytochrome P450 3A4 inhibitor: SVM model built on 7518 molecules (training set) |
No |
Log Kp (skin permeation)? Skin permeation: QSPR model implemented from |
-5.88 cm/s |
Lipinski? Lipinski (Pfizer) filter: implemented from |
0.0 |
Ghose? Ghose filter: implemented from |
None |
Veber? Veber (GSK) filter: implemented from |
0.0 |
Egan? Egan (Pharmacia) filter: implemented from |
0.0 |
Muegge? Muegge (Bayer) filter: implemented from |
1.0 |
Bioavailability Score? Abbott Bioavailability Score: Probability of F > 10% in rat |
0.55 |
PAINS? Pan Assay Interference Structures: implemented from |
0.0 alert |
Brenk? Structural Alert: implemented from |
1.0 alert: heavy_metal |
Leadlikeness? Leadlikeness: implemented from |
No; 1 violation:MW<1.0 |
Synthetic accessibility? Synthetic accessibility score: from 1 (very easy) to 10 (very difficult) |
1.42 |
* 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 |
---|---|---|
78% | Example 1 Preparation of 9-chloro-l,2,3,4,5,6-hexahvdro-3-methylazepmor4,5-b1mdole[0366] The title compound was prepared by following general procedure 1 1-Methylazepan- 4-one hydrochloride (164 mg, 1 mmol) and 4-chlorophenylhydrazme hydrochloride (179 mg, 1 mmol) were heated in a mixture of 7percent sulfuric acid in 1,4-dioxane (2-3 mL) overnight under nitrogen Two liquid layers persisted throughout the reaction The mixture was poured on to ice and basified with 50percent aq NaOH The resulting precipitate was filtered, washed well with water, and dried in air to give 9-chloro-l,2,3,4,5,6-hexahydro-3-methylazepmo[4,5-b]mdole as a dark brown solid (183 mg 78percent yield) |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
5.8 g | (1) 3-cyclopropyl-3-oxo-propanoic acid methyl ester (4.9g) in ethyl acetate (50) at room temperature to the solution was added a N, N- dimethylformamide dimethyl acetal (4.31g) at 75 C It was stirred for 3 hours. Then after cooling to room temperature, it was added 4-chlorophenyl hydrazine hydrochloride (7.52g) and triethylamine (7.0), and stirred for 4 hours at 75 C. After the reaction, water was added, extracted with ethyl acetate, washed with water twice. The organic layer was dried, the solvent was removed by distillation. The obtained residue was purified by silica gel column chromatography (chloroform: methanol) to obtain to obtain a mixture (7.7g). (2) at room temperature in methanol (45) solution of the resulting mixture (7.7g) was added 4N aqueous sodium hydroxide solution (8.4), and stirred for 1 hour under reflux. After the reaction, it cooled to room temperature, and after the addition of water (100) and activated charcoal (1g), the mixture was stirred for 0.25 hours at room temperature. After the reaction, subjected to filtration, and extracted with ethyl acetate twice (until about pH3) in the obtained aqueous layer was added 1N hydrochloric acid aqueous solution. The organic layer was washed with saturated aqueous sodium chloride, dried over anhydrous sodium sulfate, the solvent was removed by distillation to some extent. By addition of n- hexane to the obtained solution, and after stirring at 0 C, performing the filtration to obtain the title compound (5.8g) as a white solid. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
91.8% | The p-chlorophenylhydrazine hydrochloride prepared in Example 5 was transferred into a container, and 5 times the weight of the container was added to the container.Add toluene (2:1 sodium hydroxide solution and sodium carbonate), 15percent by weight of water to toluene, slowly stirring, and add the equivalent ratio of p-chlorophenylhydrazine hydrochloride. Heat to reflux and dehydrate until the water content is 160pm. heating;After cooling down to 70 ° C, based on the amount of p-chlorophenylhydrazine hydrochloride, 1.6 equivalent ratio of sodium alkoxide (sodium methoxide) was added to maintain the internal temperature at 65 ° C;In the amount of p-chlorophenylhydrazine hydrochloride, 1.8 equivalence ratio of acrylate (ethyl acrylate) was added dropwise. After 0.8 h was added dropwise, the temperature was refluxed for 1 h, and the low boiling material was distilled off until the internal temperature reached 85°C. Distillation, where the content of p-chlorophenylhydrazine was determined by HPLC at 0.4percent;The inner temperature was lowered to 60° C., 500 ml of water was added, and hydrochloric acid was added dropwise to adjust the pH to 2 and the organic phase was separated. After the aqueous phase was extracted with toluene, the organic phase was combined to obtain a toluene solution of the intermediate pyrazolone. The synthesis process involved in this embodiment includes the following sequence steps:The toluene solution prepared in Example 13 was transferred to another vessel, toluene was removed by distillation under reduced pressure, and a 1.8 equivalent ratio of alkali (2:1 KOH) was added based on the amount of p-chlorophenylhydrazine hydrochloride. Calcium hydroxide) and 8 times the weight of water, heated to 85 ° C;30percent hydrogen peroxide solution was slowly added dropwise with rapid stirring. The amount of hydrogen peroxide added was controlled to 1.1 equivalents based on the hydrochloride salt of p-chlorophenylhydrazine. After the addition was complete, the mixture was incubated for 2 hours. The reaction was stopped by HPLC when the pyrazolone content was 0.35percent.The reaction solution was allowed to come to room temperature, and the pH was adjusted to 2 by dropwise addition of hydrochloric acid, suction filtration, water washing, and drying under reduced pressure at 50°C to prepare 1-(4-chlorophenyl)-3-pyrazole alcohol with an HPLC content of 99.0. percent, yield 91.8percent. | |
79.2% | At room temperature, 36.16 g (99percent, 0.2 mol) of p-chlorophenylhydrazine hydrochloride was mixed with 216.96g of ethanol. Then 99.73 g (30percent, 0.44 mol) of 30 wtpercent ethanolic solution of sodium ethoxide and 24.49 g (98percent, 0.24 mol) of ethyl acrylate were added dropwise at 50 °C for 1 hour. After heating to 80 ° C, the reaction was stirred for 6 hours. After liquid-phase detection, the main raw material of p-chlorophenylhydrazine hydrochloride peak disappeared and the reaction is complete; followed by distillation under reduced pressure,Steamed to ethanol-free flow and then continue to steam 0.5h, then 145g of water was added to dissolve 5.46g (99percent, 0.02mol) of ferric chloride hexahydrate. Heating to 60 °C air (air flow rate of 70L / min) oxidation 12h to detect by liquid 1- (4-chlorophenyl) pyrazolidin-3-one peak disappears, the reaction is complete; add 50g water at 42°C , Hydrochloric acid was added dropwise to pH = 1, the temperature was lowered to 30°C , and 31.34 g of 1- (4-chlorophenyl) -3-pyrazolol was obtained by filtration with the yield of 79.2percent with 98.3percent content. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
92% | In the p-chlorophenylhydrazine hydrochloride prepared in Example 4, 8 times by weight of toluene was added and the mixture was stirred with p-chlorobenzene.The equivalent ratio of hydrazine hydrochloride was added alkali (potassium bicarbonate), 10percent by weight of water, heated to reflux, dehydrated to a water content of 190 pm, and the heating was stopped;After the temperature was lowered, 1.05 equivalent ratio of sodium alkoxide (sodium methoxide) was added to maintain the internal temperature based on the amount of p-chlorophenylhydrazine hydrochloride.At 70°CBased on the amount of p-chlorophenylhydrazine hydrochloride, 1.5 equivalent ratio of acrylate (methyl acrylate) was added and the temperature was increased to refluxAfter distillation, distill off the low-boilers to an internal temperature of about 85 °C to stop distillation. At this time, the content of p-chlorophenylhydrazine was determined by HPLC at 0.30percent;Reduce the internal temperature to 65°C, adjust the pH to 2, separate the organic phase, extract the aqueous phase with toluene, and combine the organic phases to obtainIntermediate pyrazolone in toluene solution. The synthesis process involved in this embodiment includes the following sequence steps:After the toluene solution prepared in Example 12 was distilled under reduced pressure to remove toluene, the amount of p-chlorophenylhydrazine hydrochloride was added.Into the 1.8 equivalent ratio of alkali (2:1:1 sodium hydroxide, barium hydroxide, calcium hydroxide) and 10 times the weight of water, heated to 80 ° C;Add 30percent hydrogen peroxide solution with stirring. The amount of hydrogen peroxide solution is controlled at 1.6 when calculated as p-chlorophenylhydrazine hydrochloride.Amount, after adding, heat 1.5 hours;The reaction was stopped by HPLC when the pyrazolone content was 0.4percent;The reaction solution was cooled to room temperature, the pH was adjusted to 1.8, suction filtration, washing with water, and drying to give 1-(4-chlorophenyl)-3-Pyrazol, its HPLC content 99.2percent, yield 92.0percent. | |
76% | At room temperature, 36.16 g (99percent, 0.2 mol) of p-chlorophenylhydrazine hydrochloride was mixed with 198.88g of methanol. Then 90 g (30percent, 0.5 mol) of 30 wtpercent methanol solution of sodium methoxide and 35.1g (98percent, 0.4 mol) of methyl acrylate were added dropwise at 60 °C for 1 hour. After heating to 65° C, the reaction was stirred for 6 hours. After liquid-phase detection, the main raw material of p-chlorophenylhydrazine hydrochloride peak disappeared and the reaction is complete; followed by distillation under reduced pressure,Steamed to ethanol-free flow and then continue to steam 0.5h, then 145g of water was added to dissolve 5.46g (99percent, 0.02mol) of ferric chloride hexahydrate. Heating to 65 °C air (air flow rate of 70L / min) oxidation 11h to detect by liquid 1- (4-chlorophenyl) pyrazolidin-3-one peak disappears, the reaction is complete; add 50g water at 45°C , Hydrochloric acid was added dropwise to pH = 2,the temperature was lowered to 30°C , and 30.2 g of 1- (4-chlorophenyl) -3-pyrazolol was obtained by filtration with the yield of 76percent with 97.9percent content. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
79.8% | At room temperature, 36.16 g (99percent, 0.2 mol) of p-chlorophenylhydrazine hydrochloride was mixed with 216.96g of ethanol. Then 31.6g (99percent, 0.46mol) of sodium ethoxide and 21.52 g (99percent, 0.3 mol) of acrylamide were added dropwise at 40 °C. After heating to 80 °C, the reaction was stirred for 6 hours. After liquid-phase detection, the main raw material of p-chlorophenylhydrazine hydrochloride peak disappeared and the reaction is complete; followed by distillation under reduced pressure,Steamed to ethanol-free flow and then continue to steam 0.5h, then 145g of water was added to dissolve 5.46g (99percent, 0.02mol) of ferric chloride hexahydrate. Heating to 80 °C air (air flow rate of 70L / min) oxidation 8h to detect by liquid 1- (4-chlorophenyl) pyrazolidin-3-one peak disappears, the reaction is complete; add 50g water at 50°C , Hydrochloric acid was added dropwise to pH = 1, the temperature was lowered to 30°C , and 31.39 g of 1-(4-chlorophenyl)-3-pyrazolol was obtained by filtration with the yield of 79.8percent with 98.9percent content. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
81.3% | In methanol; for 6h;Reflux; | To three reaction bottles were added 17.9 g (100 mmol) of p-chlorophenylhydrazine hydrochloride, 11.6 g (100 mmol) of methoxypropylMethyl ester, l00mL methanol. The temperature of the reaction mixture was raised to reflux for about 6 hours. The reaction liquid was quantitated by liquid chromatography, and 1-p-chlorophenyl-The yield of 5-hydroxypyrazole was 81.3percent. |
Tags: 1073-70-7 synthesis path| 1073-70-7 SDS| 1073-70-7 COA| 1073-70-7 purity| 1073-70-7 application| 1073-70-7 NMR| 1073-70-7 COA| 1073-70-7 structure
A160582 [2312-23-4]
(3-Chlorophenyl)hydrazine hydrochloride
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A195716 [19763-90-7]
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A819211 [50709-35-8]
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A160582 [2312-23-4]
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A195716 [19763-90-7]
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3,5-Dichlorophenylhydrazine hydrochloride
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A160582 [2312-23-4]
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Similarity: 0.97
A195716 [19763-90-7]
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H203 | Explosive; fire, blast or projection hazard |
H204 | Fire or projection hazard |
H205 | May mass explode in fire |
H220 | Extremely flammable gas |
H221 | Flammable gas |
H222 | Extremely flammable aerosol |
H223 | Flammable aerosol |
H224 | Extremely flammable liquid and vapour |
H225 | Highly flammable liquid and vapour |
H226 | Flammable liquid and vapour |
H227 | Combustible liquid |
H228 | Flammable solid |
H229 | Pressurized container: may burst if heated |
H230 | May react explosively even in the absence of air |
H231 | May react explosively even in the absence of air at elevated pressure and/or temperature |
H240 | Heating may cause an explosion |
H241 | Heating may cause a fire or explosion |
H242 | Heating may cause a fire |
H250 | Catches fire spontaneously if exposed to air |
H251 | Self-heating; may catch fire |
H252 | Self-heating in large quantities; may catch fire |
H260 | In contact with water releases flammable gases which may ignite spontaneously |
H261 | In contact with water releases flammable gas |
H270 | May cause or intensify fire; oxidizer |
H271 | May cause fire or explosion; strong oxidizer |
H272 | May intensify fire; oxidizer |
H280 | Contains gas under pressure; may explode if heated |
H281 | Contains refrigerated gas; may cause cryogenic burns or injury |
H290 | May be corrosive to metals |
Health hazards | |
Code | Phrase |
H300 | Fatal if swallowed |
H301 | Toxic if swallowed |
H302 | Harmful if swallowed |
H303 | May be harmful if swallowed |
H304 | May be fatal if swallowed and enters airways |
H305 | May be harmful if swallowed and enters airways |
H310 | Fatal in contact with skin |
H311 | Toxic in contact with skin |
H312 | Harmful in contact with skin |
H313 | May be harmful in contact with skin |
H314 | Causes severe skin burns and eye damage |
H315 | Causes skin irritation |
H316 | Causes mild skin irritation |
H317 | May cause an allergic skin reaction |
H318 | Causes serious eye damage |
H319 | Causes serious eye irritation |
H320 | Causes eye irritation |
H330 | Fatal if inhaled |
H331 | Toxic if inhaled |
H332 | Harmful if inhaled |
H333 | May be harmful if inhaled |
H334 | May cause allergy or asthma symptoms or breathing difficulties if inhaled |
H335 | May cause respiratory irritation |
H336 | May cause drowsiness or dizziness |
H340 | May cause genetic defects |
H341 | Suspected of causing genetic defects |
H350 | May cause cancer |
H351 | Suspected of causing cancer |
H360 | May damage fertility or the unborn child |
H361 | Suspected of damaging fertility or the unborn child |
H361d | Suspected of damaging the unborn child |
H362 | May cause harm to breast-fed children |
H370 | Causes damage to organs |
H371 | May cause damage to organs |
H372 | Causes damage to organs through prolonged or repeated exposure |
H373 | May cause damage to organs through prolonged or repeated exposure |
Environmental hazards | |
Code | Phrase |
H400 | Very toxic to aquatic life |
H401 | Toxic to aquatic life |
H402 | Harmful to aquatic life |
H410 | Very toxic to aquatic life with long-lasting effects |
H411 | Toxic to aquatic life with long-lasting effects |
H412 | Harmful to aquatic life with long-lasting effects |
H413 | May cause long-lasting harmful effects to aquatic life |
H420 | Harms public health and the environment by destroying ozone in the upper atmosphere |
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