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Product Details of [ 285984-25-0 ]

CAS No. :285984-25-0 MDL No. :MFCD04115090
Formula : C14H19N3 Boiling Point : -
Linear Structure Formula :- InChI Key :ITHNHEWXIBNEDG-UHFFFAOYSA-N
M.W : 229.32 Pubchem ID :2974132
Synonyms :

Calculated chemistry of [ 285984-25-0 ]      Expand+

Physicochemical Properties

Num. heavy atoms : 17
Num. arom. heavy atoms : 11
Fraction Csp3 : 0.36
Num. rotatable bonds : 2
Num. H-bond acceptors : 1.0
Num. H-bond donors : 1.0
Molar Refractivity : 72.2
TPSA : 43.84 Ų

Pharmacokinetics

GI absorption : High
BBB permeant : Yes
P-gp substrate : No
CYP1A2 inhibitor : Yes
CYP2C19 inhibitor : Yes
CYP2C9 inhibitor : No
CYP2D6 inhibitor : No
CYP3A4 inhibitor : No
Log Kp (skin permeation) : -5.13 cm/s

Lipophilicity

Log Po/w (iLOGP) : 2.74
Log Po/w (XLOGP3) : 3.62
Log Po/w (WLOGP) : 3.07
Log Po/w (MLOGP) : 2.94
Log Po/w (SILICOS-IT) : 2.44
Consensus Log Po/w : 2.96

Druglikeness

Lipinski : 0.0
Ghose : None
Veber : 0.0
Egan : 0.0
Muegge : 0.0
Bioavailability Score : 0.55

Water Solubility

Log S (ESOL) : -3.89
Solubility : 0.0296 mg/ml ; 0.000129 mol/l
Class : Soluble
Log S (Ali) : -4.23
Solubility : 0.0136 mg/ml ; 0.0000591 mol/l
Class : Moderately soluble
Log S (SILICOS-IT) : -4.17
Solubility : 0.0154 mg/ml ; 0.0000671 mol/l
Class : Moderately soluble

Medicinal Chemistry

PAINS : 0.0 alert
Brenk : 0.0 alert
Leadlikeness : 2.0
Synthetic accessibility : 2.28

Safety of [ 285984-25-0 ]

Signal Word:Warning Class:N/A
Precautionary Statements:P280-P305+P351+P338 UN#:N/A
Hazard Statements:H302 Packing Group:N/A
GHS Pictogram:

Application In Synthesis of [ 285984-25-0 ]

* 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.

  • Upstream synthesis route of [ 285984-25-0 ]
  • Downstream synthetic route of [ 285984-25-0 ]

[ 285984-25-0 ] Synthesis Path-Upstream   1~5

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YieldReaction ConditionsOperation in experiment
86% With hydrogenchloride In ethanol for 48 h; Reflux A solution of 4-tolyllhydrazine hydrochloride(5.20 g, 33 mmol) and pentylacyl acetonitrile (3.75 g, 30 mmol) in 0.4 M ethanolic solution of HCl(100 mL) was heated under reflux during 48 h. After cooling to room temperature, 1M NaOH wasadded to the mixture until the pH reached 10–11. The mixture was partitioned between water and ethylacetate. The water phase was extracted twice with dichloromethane. The organic phases werecombined and washed with water and brine, then dried with Na2SO4. Evaporation of the solvent invacuo afforded the crude product, which was subjected to recrystallization from ethyl acetate andpetroleum ether to produce compound 25a as a white solid (5.88 g, 86percent yield).
86.4% With hydrogenchloride In ethanol at 80℃; for 8 h; A solution of 4-tolyllhydrazine hydrochloride (5.20 g,33 mmol) and pentylacyl acetonitrile (3.75 g, 30 mmol) in 0.4 M ethanolic solution of HCl (100 mL)was heated under reflux during 8 h. After cooling to room temperature, 1 M NaOH was added to the mixture until the pH reached 10–11. The mixture was partitioned between water and ethyl acetate. The water phase was extracted twice with dichloromethane. The organic phases were combined and washed with water and brine, then dried with Na2SO4. Evaporation of the solvent in vacuo afforded the crude product, which was subjected to recrystallization from ethyl acetate and petroleum ether to produce compound 2a as a white solid (5.88 g,). Yield: 86.4percent. 1H-NMR (CDCl3, 400 MHz), δ: 7.40 (d, 2H),7.25 (d, 2H), 5.50 (s, 1H), 4.72 (brs, 2H), 2.37 (s, 3H), 1.32 (s, 9H). ESI-MS (+Q, m/z): 230 [M + H]+,252 [M + Na]+.
52% With hydrogenchloride In ethanol; waterReflux Intermediate A: 3-tert-Butyl-1-p-tolyl-1H-pyrazol-5-amine
To a stirred solution of p-tolylhydrazine hydrochloride (100 g, 630 mmol) in EtOH (1251 mL) was added 4,4-dimethyl-3-oxopentanenitrile (88 g, 699 mmol) and HCl (62.5 mL, 750 mmol).
The resulting mixture was stirred at reflux overnight.
The reaction mixture was cooled to room temperature and concentrated in vacuo to c.a. 1/3 of the original volume.
The reaction mixture was then cooled in an ice-bath and taken to c.a. pH 8-9 with 6M aq NaOH.
The reaction mixture was extracted with diethyl ether (500 mL) and the organic phase washed with water (2*300 mL) before being dried over magnesium sulphate and concentrated in vacuo to afford an orange solid.
The solid was suspended in iso-hexane and stirred at reflux for 2.5 h before being cooled and filtered whilst still hot to yield the subtitle product 3-tert-butyl-1-p-tolyl-1H-pyrazol-5-amine as a pale brown solid (76.5 g, 52percent); Rt 1.31 min (Method 1); m/z 230 (M+H)+ (ES+); 1H NMR δ: 1.20 (9H, s), 2.32 (3H, s), 5.10 (2H, br s), 5.35 (1H, s), 7.24 (2H, d), 7.42 (2H, m).
30 g for 1.5 h; Pivaloylacetonitrile (19.0 g) was refluxed with tolylhydrazine hydrochloride (24.0 g) in ethanol (190 ml) for 1.5 hr. The solution was cooled and volatiles removed in vacuo. The residue was extracted with ethyl acetate and 10percent aq. sodium carbonate, and the organic layer washed with water and brine. Drying over sodium sulfate and solvent removal afforded pyrazole 6 as an off-white solid (30 g).

Reference: [1] Patent: US2004/192653, 2004, A1,
[2] Molecules, 2014, vol. 19, # 2, p. 2004 - 2028
[3] Molecules, 2015, vol. 20, # 9, p. 16604 - 16619
[4] Organic Process Research and Development, 2010, vol. 14, # 3, p. 650 - 656
[5] Journal of the American Chemical Society, 2009, vol. 131, # 37, p. 13286 - 13296
[6] Organic Process Research and Development, 2011, vol. 15, # 4, p. 841 - 854
[7] Patent: US2015/232450, 2015, A1, . Location in patent: Paragraph 0205-0206
[8] Journal of Medicinal Chemistry, 2002, vol. 45, # 14, p. 2994 - 3008
[9] Patent: US2008/207647, 2008, A1, . Location in patent: Page/Page column 18
[10] Patent: US2015/183777, 2015, A1, . Location in patent: Paragraph 0191; 0192
[11] Molecules, 2016, vol. 21, # 5,
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YieldReaction ConditionsOperation in experiment
80.3% With hydrogenchloride In ethanol for 8 h; Reflux In a 250 mL pre-flask was added 100 mL of ethanol,(30 mmol) of pivaloylacetonitrile,(33. 63 mmol) of 4-methylphenylhydrazine,3. 6 mL of concentrated hydrochloric acid was added dropwise with stirring, heated under reflux for 8 hours,Cooled, concentrated, the residue adjusted with dilute sodium hydroxide PH10-11,Extracted three times with ethyl acetate, dried over anhydrous sodium sulfate, concentrated,The resulting solid was recrystallized from ethyl acetate / petroleum ether to give white crystals C,Yield 80.3percent. 5-tert-butyl-2-p-methylphenyl-3-aminopyrazole (3. 5 mmolC) was placed in 100 ml three-necked flask and dissolved in 30 ml of tetrahydrofuran. The three-necked flask was allowed to cool to -20 ° C, stirring in batches by adding 2. 9g sodium bicarbonate, 15min, dropwise dropwise chloroformic acid trichloroethyl ester(3. 5 mmol),Control solution temperature does not exceed ° C,After completion of the dropwise addition, the mixture was stirred for 30 min and then heated to 0 ° C for 12 h. After completion of the reaction, the mixture was filtered and the residue was rinsed with ethyl acetate and the filtrate was concentrated to yield 85percent.
80.3% With hydrogenchloride In ethanol; water for 8 h; Reflux In a 250 mL round botom flask, 100 mL of ethanol was added, (30 mmol) of pivaloylacetonitrile, (33.63 mmol) of 4-methylphenylhydrazine, A solution of 3.6 mL of concentrated hydrochloric acid was added dropwise with stirring,Heated to reflux for 8 hours, cool down, concentrate, The residue was adjusted to pH 10-11 with dilute sodium hydroxide, Extracted three times with ethyl acetate, Dried over anhydrous sodium sulfate, concentrate, The resulting solid was recrystallized from ethyl acetate / petroleum ether to give white crystals C, Yield 80.3percent. 5-tert-butyl-2-p-methylphenyl-3-aminopyrazole (3.5 mmolC) was placed in a 100 ml three-Dissolved in 30 ml of tetrahydrofuran, Place the three-necked flask in a cryogenic tank to cool to -20 ° C, 2.9 g of sodium bicarbonate was added in portions with stirring, After 15 min, A solution of trichloroethyl chloroformate (3.5 mmol) was added dropwise, Control the solution temperature does not exceed 0 deg C, After dripping, Continue stirring for 30min, And then heated to 0 ° C for 12 h. After completion of the reaction, The mixture is filtered, The residue was washed with ethyl acetate, The filtrate was concentrated, Yield 85percent.
80.3% for 8 h; Reflux In 250 ml bottle eggplant adding 100 ml ethanol, (30mmol) special fifth heavenly stem acyl acetonitrile, (33.63mmol) 4 - methyl phenyl hydrazine, stirring next adds by drops 3.6 ml concentrated hydrochloric acid, heating reflux for 8 hours, cooling, concentrated, the residue with dilute sodium hydroxide to adjust the pH 10 - 11, ethyl acetate extraction three times, dried with anhydrous sodium sulfate, concentrated, the obtained solid ethyl acetate/petroleum ether recrystallization to obtain white crystal C, yield 80.3percent. 5 - tert-butyl -2 - methylphenyl -3 - amino pyrazole (3.5mmolC) in 100 ml in three-necked bottle, to 30 ml tetrahydrofuran is dissolved, the low temperature troughthree-necked bottle is lowering the temperature to -20 °C, stirring in batches under the adding 2.9g sodium bicarbonate, 15min after, little by chlorination formic acid trichloroethyl (3.5mmol), control solution at a temperature of not more than 0 °C, after dropping, continuing to stir 30min, then heating up to 0 °C reaction 12h. The completion of the reaction, the mixture filtration, the filter residue washed ethyl acetate, the filtrate is concentrated, yield 85percent.
Reference: [1] Patent: CN106518767, 2017, A, . Location in patent: Paragraph 0075; 0076; 0115
[2] Patent: CN106518766, 2017, A, . Location in patent: Paragraph 0098
[3] Patent: CN106518858, 2017, A, . Location in patent: Paragraph 0076
[4] Bioorganic and Medicinal Chemistry Letters, 2008, vol. 18, # 6, p. 1772 - 1777
[5] Patent: US2009/131437, 2009, A1, . Location in patent: Page/Page column 15
[6] Patent: EP1698335, 2006, A1, . Location in patent: Page/Page column 42
[7] Bioorganic and Medicinal Chemistry Letters, 2013, vol. 23, # 19, p. 5401 - 5409
[8] MedChemComm, 2016, vol. 7, # 7, p. 1421 - 1428
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Reference: [1] Bioorganic and Medicinal Chemistry Letters, 2017, vol. 27, # 18, p. 4383 - 4388
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Reference: [1] Patent: US2003/232865, 2003, A1, . Location in patent: Page 34-35
  • 5
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Reference: [1] Journal of Medicinal Chemistry, 2002, vol. 45, # 14, p. 2994 - 3008
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Technical Information

• 1,4-Addition of an Amine to a Conjugated Enone • 1,4-Addition of an Amine to a Conjugated Enone • Amides Can Be Converted into Aldehydes • Amine Synthesis from Nitriles • Amine Synthesis from Nitriles • Amines Convert Acyl Chlorides into Amides • Amines Convert Esters into Amides • Azide Reduction by LiAlH4 • Azide Reduction by LiAlH4 • Basicity of Amines • Benzylic Oxidation • Birch Reduction • Birch Reduction of Benzene • Blanc Chloromethylation • Buchwald-Hartwig C-N Bond and C-O Bond Formation Reactions • Chan-Lam Coupling Reaction • Chichibabin Reaction • Complete Benzylic Oxidations of Alkyl Chains • Complete Benzylic Oxidations of Alkyl Chains • Conversion of Amino with Nitro • Deprotonation of Methylbenzene • Diazotization Reaction • DIBAL Attack Nitriles to Give Ketones • Directing Electron-Donating Effects of Alkyl • Electrophilic Chloromethylation of Polystyrene • Enamine Formation • Formation of an Amide from an Amine and a Carboxylic Acid • Formation of an Amide from an Amine and a Carboxylic Acid • Friedel-Crafts Alkylation of Benzene with Acyl Chlorides • Friedel-Crafts Alkylation of Benzene with Carboxylic Anhydrides • Friedel-Crafts Alkylation Using Alkenes • Friedel-Crafts Alkylations of Benzene Using Alkenes • Friedel-Crafts Alkylations Using Alcohols • Friedel-Crafts Reaction • Groups that Withdraw Electrons Inductively Are Deactivating and Meta Directing • Halogenation of Benzene • Hemiaminal Formation from Amines and Aldehydes or Ketones • Hemiaminal Formation from Amines and Aldehydes or Ketones • Hofmann Elimination • Hofmann Rearrangement • Hydride Reductions • Hydrogenation to Cyclohexane • Hydrogenolysis of Benzyl Ether • Hydrolysis of Imines to Aldehydes and Ketones • Imine Formation from Amines and Aldehydes or Ketones • Leuckart-Wallach Reaction • Mannich Reaction • Methylation of Ammonia • Methylation of Ammonia • Nitration of Benzene • Nitrosation of Amines • Nucleophilic Aromatic Substitution • Nucleophilic Aromatic Substitution with Amine • Oxidation of Alkyl-substituted Benzenes Gives Aromatic Ketones • Peptide Bond Formation with DCC • Petasis Reaction • Preparation of Alkylbenzene • Preparation of Amines • Preparation of LDA • Reactions of Amines • Reactions of Benzene and Substituted Benzenes • Reduction of an Amide to an Amine • Reduction of an Amide to an Amine • Reductive Amination • Reductive Amination • Reductive Removal of a Diazonium Group • Reverse Sulfonation——Hydrolysis • Ring Opening of Azacyclopropanes • Ring Opening of Azacyclopropanes • Ring Opening of Oxacyclobutanes • Specialized Acylation Reagents-Vilsmeier Reagent • Strecker Synthesis • Sulfonation of Benzene • Synthesis of 2-Amino Nitriles • The Acylium Ion Attack Benzene to Form Phenyl Ketones • The Claisen Rearrangement • The Nitro Group Conver to the Amino Function • Ugi Reaction • Vilsmeier-Haack Reaction
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