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[ CAS No. 902135-91-5 ] {[proInfo.proName]}

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Chemical Structure| 902135-91-5
Chemical Structure| 902135-91-5
Structure of 902135-91-5 * Storage: {[proInfo.prStorage]}
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Product Details of [ 902135-91-5 ]

CAS No. :902135-91-5 MDL No. :MFCD14636428
Formula : C16H18Cl3N5O2 Boiling Point : -
Linear Structure Formula :- InChI Key :PAOFPNGYBWGKCO-UHFFFAOYSA-N
M.W : 418.71 Pubchem ID :25033099
Synonyms :
AT7519 (hydrochloride);AT7519 Hydrochloride

Calculated chemistry of [ 902135-91-5 ]

Physicochemical Properties

Num. heavy atoms : 26
Num. arom. heavy atoms : 11
Fraction Csp3 : 0.31
Num. rotatable bonds : 6
Num. H-bond acceptors : 4.0
Num. H-bond donors : 4.0
Molar Refractivity : 106.61
TPSA : 98.91 Ų

Pharmacokinetics

GI absorption : High
BBB permeant : No
P-gp substrate : Yes
CYP1A2 inhibitor : Yes
CYP2C19 inhibitor : No
CYP2C9 inhibitor : No
CYP2D6 inhibitor : No
CYP3A4 inhibitor : Yes
Log Kp (skin permeation) : -6.45 cm/s

Lipophilicity

Log Po/w (iLOGP) : 0.0
Log Po/w (XLOGP3) : 3.39
Log Po/w (WLOGP) : 2.68
Log Po/w (MLOGP) : 1.91
Log Po/w (SILICOS-IT) : 2.71
Consensus Log Po/w : 2.14

Druglikeness

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

Water Solubility

Log S (ESOL) : -4.49
Solubility : 0.0136 mg/ml ; 0.0000325 mol/l
Class : Moderately soluble
Log S (Ali) : -5.15
Solubility : 0.00299 mg/ml ; 0.00000714 mol/l
Class : Moderately soluble
Log S (SILICOS-IT) : -6.13
Solubility : 0.00031 mg/ml ; 0.00000074 mol/l
Class : Poorly soluble

Medicinal Chemistry

PAINS : 0.0 alert
Brenk : 0.0 alert
Leadlikeness : 1.0
Synthetic accessibility : 2.71

Safety of [ 902135-91-5 ]

Signal Word:Warning Class:N/A
Precautionary Statements:P261-P305+P351+P338 UN#:N/A
Hazard Statements:H302-H315-H319-H335 Packing Group:N/A
GHS Pictogram:

Application In Synthesis of [ 902135-91-5 ]

* 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.

  • Downstream synthetic route of [ 902135-91-5 ]

[ 902135-91-5 ] Synthesis Path-Downstream   1~10

  • 1
  • [ 902135-91-5 ]
  • [ 124-63-0 ]
  • [ 902156-99-4 ]
YieldReaction ConditionsOperation in experiment
With N-ethyl-N,N-diisopropylamine In acetonitrile at 20℃; for 16h; 1.1F To a mixture of 4-(2,6-dichloro-ben2oylamino)-1H-pyrazole-3-carboxylic acid piperidin-4- ylamide hydrochloride (1 mmol) in acetonitrile (10 ml) was added diisopropylethylamine (2.2 mmol) followed by the methanesulphonyl chloride (1 mmol). The mixture was stirred at ambient temperature for 16 hours then reduced in vacuo. The residue was partitioned between ethyl acetate and water, the layers separated and the organic portion washed with brine, dried (MgSO4) and reduced in vacuo to give the title compound. [M+H]+460 Rt 2.67. LC/MS. r.t. 2.67 min; m/z 460.111H NMR: (400 MHz, DMSO-d6) δ 13.51 (s, 1H), 10.20 (s, 1H), 8.50 (d, J = 8.0 Hz, 1 H), 8.41 (s, 1 H), 7.66 - 7.56 (m, 3H), 3.95 - 3.89 (m, 1 H), 3.61 (d, J = 12.0 Hz, 2H), 2.92 (S1 3H), 2.84 (t, J = 12.0 Hz, 2H), 1.89 - 1.86 (m, 2H), 1.79 - 1.70 (m, 2H)
With N-ethyl-N,N-diisopropylamine In acetonitrile at 20℃; for 16h; 1.F To a mixture of 4-(2,6-dichloro-benzoylamino)-1H-pyrazole-3-carboxylic acid piperidin-4- ylamide hydrochloride (1 mmol) in acetonitrile (10 ml) was added diisopropylethylamine (2.2 mmol) followed by the methanesulphonyl chloride (1 mmol). The mixture was stirred at ambient temperature for 16 hours then reduced in vacuo. The residue was partitioned between ethyl acetate and water, the layers separated and the organic portion washed with brine, dried (MgSO4) and reduced in vacuo to give the title compound. [M+ H]+ 460 Rt 2.67. LC/MS. r.t. 2.67 min; m/z 460.111H NMR: (400 MHz, DMSOd6) δ 13.51 (s, 1 H), 10.20 (s, 1H), 8.50 (d, J = 8.0 Hz, 1 H), 8.41 (s, 1H), 7.66 - 7.56 (m, 3H), 3.95 - 3.89 (m, 1H), 3.61 (d, J = 12.0 Hz, 2H), 2.92 (s, 3H), 2.84 (t, J = 12.0 Hz, 2H), 1.89 - 1.86 (m, 2H), 1.79 - 1.70 (m, 2H)
With N-ethyl-N,N-diisopropylamine In acetonitrile 1.F 1F. 1F. 4-(2,6-dichloro-benzoylamino)-1H-pyrazole-3-carboxylic acid (1-methanesulphonyl-piperidin-4-yl)-amide To a mixture of 4-(2,6-dichloro-benzoylamino)-1H-pyrazole-3-carboxylic acid piperidin-4-ylamide hydrochloride (1 mmol) in acetonitrile (10 ml) was added diisopropylethylamine (2.2 mmol) followed by the methanesulphonyl chloride (1 mmol). The mixture was stirred at ambient temperature for 16 hours then reduced in vacuo. The residue was partitioned between ethyl acetate and water, the layers separated and the organic portion washed with brine, dried (MgSO4) and reduced in vacuo to give the title compound. [M+H]+ 460 Rt 2.67. LC/MS. r.t. 2.67 min; m/z 460.11 1H NMR: (400 MHz, DMSO-d6) δ 13.51 (s, 1H), 10.20 (s, 1H), 8.50 (d, J=8.0 Hz, 1H), 8.41 (s, 1H), 7.66-7.56 (m, 3H), 3.95-3.89 (m, 1H), 3.61 (d, J=12.0 Hz, 2H), 2.92 (s, 3H), 2.84 (t, J=12.0 Hz, 2H), 1.89-1.86 (m, 2H), 1.79-1.70 (m, 2H)
With N-ethyl-N,N-diisopropylamine In acetonitrile at 20℃; for 16h; 7.F To a mixture of 4-(2,6-dichloro-benzoylamino)-1H-pyrazole-3-carboxylic acid piperidin-4- ylamide hydrochloride (1 mmol) in acetonitrile (10 ml) was added diisopropylethylamine (2.2 mmol) followed by the methanesulphonyl chloride (1 mmol). The mixture was stirred at ambient temperature for 16 hours then reduced in vacuo. The residue was partitioned between ethyl acetate and water, the layers separated and the organic portion washed with brine, dried (MgSO4) and reduced in vacuo to give the title compound. [M+H]+460 Rt 2.67. LC/MS. r.t. 2.67 min; m/z 460.111H NMR: (400 MHz, DMSOd6) δ 13.51 (s, 1 H), 10.20 (s, 1 H), 8.50 (d, J = 8.0 Hz, 1 H), 8.41 (s, 1 H), 7.66 - 7.56 (m, 3H)1 3.95 - 3.89 (m, 1H), 3.61 (d, J = 12.0 Hz, 2H), 2.92 (s, 3H), 2.84 (t, J = 12.0 Hz, 2H), 1.89 - 1.86 (m, 2H), 1.79 - 1.70 (m, 2H)

  • 2
  • [ 902135-91-5 ]
  • [ 75-36-5 ]
  • [ 902151-71-7 ]
YieldReaction ConditionsOperation in experiment
With N-ethyl-N,N-diisopropylamine In acetonitrile at 20℃; for 16h; 29 General Procedure G; Sulphonylation or Acylation of Piperidines EPO To a mixture of 4-(2,6-dichloro-benzoylamino)-1H-pyrazole-3-carboxylic acid piperidin-4-ylamide hydrochloride (Preparation X) (1 mmol) in acetonitrile (10 ml) was added diisopropylethylamine (2.2 mmol) followed by the appropriate sulphonyl or acid chloride (1 mmol). The mixture was stirred at ambient temperature for 16 hours then reduced in vacuo. The residue was partitioned between ethyl acetate and water, the layers separated and the organic portion washed with brine, dried (MgSO4) and reduced in vacuo to give the desired sulphonamide or amide derivative.
  • 3
  • AT7519 [ No CAS ]
  • [ 51517-01-2 ]
  • C19H23Cl2N5O5S [ No CAS ]
YieldReaction ConditionsOperation in experiment
With N-ethyl-N,N-diisopropylamine; In acetonitrile; at 20℃; for 16h; To a mixture of 4-(2,6-dichloro-benzoylamino)-1H-pyrazole-3-carboxylic acid piperidin-4-ylamide hydrochloride (Preparation X) (2 mmol) in acetonitrile (10 ml) was added diisopropylethylamine (4.2 mmol) followed by the appropriate sulphonyl chloride (approximately 2 mmol). The mixture was stirred at ambient temperature for 16 hours then reduced in vacuo. The residue was partitioned between ethyl acetate and water, the layers separated and the organic portion washed with brine, dried (MgSO4) and reduced in vacuo to give the desired sulphonamide derivative.
  • 4
  • [ 902135-91-5 ]
  • [ 407-25-0 ]
  • [ 1347879-84-8 ]
YieldReaction ConditionsOperation in experiment
30% With triethylamine In tetrahydrofuran at 20℃; for 15h; 8 EXAMPLE 8; Synthesis of 4-(2.6-dichloro-benzoylamino)-1-H-pyrazole-3-carboxylic acid [1- (2,2,2-trifluoro-acetyl)-piperidm-4yl1-amide EPO To a suspension of 4-(2,6-dichloro-benzoylamino)-1H-pyrazole-3-carboxylic acid piperidin-4-ylamide hydrochloride (PreparationX) (0.3 g, 0.71 mmol), triethylamine (0.213 ml, 1.42mmol) in THF (5 ml) was added trifluoroacetic anhydride (0.1 ml, 0.71 mmol ). The reaction mixture was stirred at room temperature for 15 hours. The crude product was partitioned between EtOAc and water, the organic phase was dried over MgSO4, filtered and evaporated in vacuo. The residue was triturated with diethyl ether to afford the title compound as pale yellow solid (0.1 g, 30%) (LC/MS: Rt 2.96, [M+H]+478).
  • 5
  • [ 902135-91-5 ]
  • [ 1622-32-8 ]
  • [ 902152-89-0 ]
YieldReaction ConditionsOperation in experiment
22% With triethylamine In N,N-dimethyl-formamide at 20℃; for 1.5h; 6.6A EXAMPLE 6; Preparation of 4-(2,6-dichloro-benzoylamino)-1H-pyrazole-3-carboxylic acid |"l-(2- dimethylamino-ethanesulphonyl)-piperidin-4-yl]-amide6A. 4-r2,6-dichloro-benzoylamino)-1H-pyrazole-3-carboxylic acid (1- ethenesulphonyl-piperidin-4-ylVamide EPO To a solution of 4-(2,6-dichloro-benzoylamino)-1H-pyrazole-3-carboxylic acid piperidine-4-ylamide hydrochloride (Preparation X) (2 g, 4.78 mmoles) in DMF (20 ml) was added triethylamine (2.7 ml, 19.12 mmoles) and then 2-chloro-l- ethanesulphonyl chloride (0.5 ml, 4.78 mmoles). The reaction mixture was stirred at ambient temperature for 30 minutes. Further 2-chloro-l-ethanesulphonyl chloride (175 μl, 1.67 mmoles) was added and the reaction mixture was stirred at ambient temperature for a further hour. The reaction mixture was diluted with EtOAc and washed with water (x3) and then brine. The organic portion was dried (MgSO4), filtered and evaporated in vacuo. The residue was purified by flash chromatography (Biotage SP4, 4OS, flow rate 40 ml/min, gradient 1 : 1 EtO Ac/Petrol to EtOAc) to give 4-(2,6-dichloro-benzoylamino)-1H-pyrazole-3-carboxylic acid (1- ethenesulphonyl-piperidin-4-yl)-amide as a white solid (500 mg, 22%). (LC/MS: Rt 2.94, [M+H]+ 472.15).
  • 6
  • AT7519 [ No CAS ]
  • [ 4837-38-1 ]
  • C22H27Cl2N5O4S [ No CAS ]
YieldReaction ConditionsOperation in experiment
With N-ethyl-N,N-diisopropylamine In acetonitrile at 20℃; for 16h; 73 To a mixture of 4-(2,6-dichloro-benzoylamino)-1H-pyrazole-3-carboxylic acid piperidin-4-ylamide hydrochloride (Preparation X) (2 mmol) in acetonitrile (10 ml) was added diisopropylethylamine (4.2 mmol) followed by the appropriate sulphonyl chloride(approximately 2 mmol). The mixture was stirred at ambient temperature for 16 hours then reduced in vacuo. The residue was partitioned between ethyl acetate and water, the layers separated and the organic portion washed with brine, dried (MgSO4) and reduced in vacuo to give the desired sulphonamide derivative.
  • 7
  • [ 844443-90-9 ]
  • [ 902135-91-5 ]
YieldReaction ConditionsOperation in experiment
With hydrogenchloride; methanol In ethyl acetate at 20℃; X.2 Step 2. 4-C2,6-dichloro-benzoylamino)-1H-pyrazole-3-carboxylic acid piperidin-4- ylamide hydrochlorideA solution of 4- { [4-(2,6-dichloro-benzoylamino)- 1 H-pyrazole-3-carbonyl] -amino } - piperidine- 1 -carboxylic acid tert-butyl ester (7.9 g) in MeOH (50 niL) and EtOAc (50ml) was treated with sat. HCl-EtOAc (40 mL) then stirred at r.t. overnight. The product did not crystallise due to the presence of methanol, and therefore the EPO reaction mixture was evaporated and the residue triturated with EtOAc. The resulting off white solid was collected by filtration, washed with EtOAc and sucked dry on the sinter to give 6.3g of 4-(2,6-dichloro-benzoylamino)~lH-pyrazole-3- carboxylic acid piperidin-4-ylamide as the hydrochloride salt. (LC/MS: Rt 5.89, [M+H]+ 382 / 384).
With hydrogenchloride In methanol; ethyl acetate at 20℃; 11.E 1 IE. 4-(2,6-dichloro-benzoylamino*)-lH-pyrazole-3-carboxylic acid piperidin-4- ylamideA solution of 4- { [4-(2,6-dichloro-benzoylamino)- 1 H-pyrazole-3 -carbonyl] -amino } - piperidine- 1 -carboxylic acid tert-butyl ester (7.9 g) in MeOH (50 rnL) and EtOAc (50ml) was treated with sat. HCl-EtOAc (40 mL) then stirred at r.t. overnight. The product did not crystallise due to the presence of methanol, and therefore the reaction mixture was evaporated and the residue triturated with EtOAc. The resulting off white solid was collected by filtration, washed with EtOAc and sucked dry on the sinter to give 6.3g of 4-(2,6-dichloro-benzoylamino)-lH-pyrazole-3- carboxylic acid piperidin-4-ylamide as the hydrochloride salt. (LC/MS: Rt 5.89, [M+H]+ 382 / 384).
With hydrogenchloride In methanol; ethyl acetate at 20℃; 237.237C A solution of 4-[4-(2,6-dichloro-benzoylamino)-1H-pyrazole-3-carbonyl]-amino}-piperidine-1 -carboxylic acid tert-butyl ester (7.9 g) in MeOH (50 mL) and EtOAc (50ml) was treated with sat. HCI-EtOAc (40 mL) then stirred at r.t. overnight. The product did not crystallise due to the presence of methanol, and therefore the reaction mixture was evaporated and the residue triturated with EtOAc. The resulting off white solid was collected by filtration, washed with EtOAc and sucked dry on the sinter to give 6.3g of 4-(2,6-dichloro-benzoylamino)-1H- pyrazole-3-carboxylic acid piperidin-4-ylamide as the hydrochloride salt. (LC/MS: Rt 5.89, [M+H]+ 382 / 384).
With hydrogenchloride In methanol; ethyl acetate at 20℃; 237.237C A solution of 4-[4-(2,6-dichloro-benzoylamino)-1H-pyrazole-3-carbonyl]-amino}-piperidine-1 -carboxylic acid tert-butyl ester (7.9 g) in MeOH (50 mL) and EtOAc (50ml) was treated with sat. HCI-EtOAc (40 mL) then stirred at r.t. overnight. The product did not crystallise due to the presence of methanol, and therefore the reaction mixture was evaporated and the residue triturated with EtOAc. The resulting off white solid was collected by filtration, washed with EtOAc and sucked dry on the sinter to give 6.3g of 4-(2,6-dichloro-benzoylamino)-1H- pyrazole-3-carboxylic acid piperidin-4-ylamide as the hydrochloride salt. (LC/MS: Rt 5.89, [M+H]+ 382 / 384).
With hydrogenchloride In methanol; ethyl acetate at 20℃; 2.C; 1.1E A solution of 4-[4-(2,6-dichloro-benzoylamino)-1 H-pyrazole-3-carbonyI]-amino}-piperidine- 1-carboxylic acid tert-butyl ester (7.9 g) in MeOH (50 ml_) and EtOAc (50ml) was treated with sat. HCI-EtOAc (40 ml_) then stirred at r.t. overnight. The product did not crystallise due to the presence of methanol, and therefore the reaction mixture was evaporated and the residue triturated with EtOAc. The resulting off white solid was collected by filtration, washed with EtOAc and sucked dry on the sinter to give 6.3g of 4-(2,6-dichloro- benzoylamino)-1 H-pyrazole-3-carboxylic acid piperidin-4-ylamide as the hydrochloride salt. (LC/MS: Rt 5.89, [M+H]+ 382 / 384).
With hydrogenchloride In methanol; water; ethyl acetate at 20℃; 1.E A solution of 4-[4-(2,6-dichloro-benzoylamino)-1 H-pyrazole-3-carbonyl]-amino}-piperidine- 1-carboxylic acid tert-butyl ester (7.9 g) in MeOH (50 mL) and EtOAc (50ml) was treated with sat. HCI-EtOAc (40 mL) then stirred at r.t. overnight. The product did not crystallise due to the presence of methanol, and therefore the reaction mixture was evaporated and the residue triturated with EtOAc. The resulting off white solid was collected by filtration, washed with EtOAc and sucked dry on the sinter to give 6.3g of 4-(2,6-dichloro- benzoylamino)-1H-pyrazole-3-carboxylic acid piperidin-4-ylamide as the hydrochloride salt. (LC/MS: R4 5.89, [M+H]+ 382 / 384).
With hydrogenchloride In methanol; ethyl acetate at 20℃; 2.2C 4-(2,6-dichloro-benzoylamino)-1 H-pyrazole-3-carboxylic acid piperidin-4-ylamide A solution of 4-[4-(2,6-dichloro-benzoylamino)-1 H-pyrazole-3-carbonyl]-amino}-piperidine- 1-carboxylic acid tert-butyl ester (7.9 g) in MeOH (50 ml.) and EtOAc (50ml) was treated with sat. HCI-EtOAc (40 mL) then stirred at r.t. overnight. The product did not crystallise due to the presence of methanol, and therefore the reaction mixture was evaporated and the residue triturated with EtOAc. The resulting off white solid was collected by filtration, washed with EtOAc and sucked dry on the sinter to give 6.3g of 4-(2,6-dichloro- benzoylamino)-1 H-pyrazole-3-carboxylic acid piperidin-4-ylamide as the hydrochloride salt. (LC/MS: R1 5.89, [M+H]+ 382 / 384).
With hydrogenchloride In methanol; ethyl acetate at 20℃; 2.C; 7.E A solution of 4-[4-(2,6-dichloro-benzoylamino)-1 H-pyrazole-3-carbonyl]-amino}-piperidine- 1-carboxylic acid tert-butyl ester (7.9 g) in MeOH (50 ml_) and EtOAc (50ml) was treated with sat. HCI-EtOAc (40 mL) then stirred at r.t. overnight. The product did not crystallise due to the presence of methanol, and therefore the reaction mixture was evaporated and the residue triturated with EtOAc. The resulting off white solid was collected by filtration, washed with EtOAc and sucked dry on the sinter to give 6.3g of 4-(2,6-dichloro- benzoylamino)-1 H-pyrazole-3-carboxylic acid piperidin-4-ylamide as the hydrochloride salt. (LC/MS: Rt 5.89, [M+H]+ 382 / 384).

  • 8
  • AT7519 [ No CAS ]
  • [ 844442-38-2 ]
YieldReaction ConditionsOperation in experiment
In methanol;Strata-NH2;Product distribution / selectivity; The hydrochloride salt was taken up in MeOH and passed through a Strata-NH2 column, eluting with MeOH. The product-containing fractions were reduced in vacuo to give 4-(2,6-dichlorobenzoylamino)-lH-pyrazole-3-carboxylic acid piperidin-4-ylamide free base. To a mixture of the free base in MeOH was added MsOH (70% in water) and the mixture was stirred at ambient for 14 hours, then reduced in vacuo, azeotroping with toluene (x 3). The residue was purified by trituration with acetone and dried in the vacuum oven to give the mesylate salt.
With sodium hydrogencarbonate; In water; at 20.0℃; for 1.0h;Product distribution / selectivity; EXAMPLE 8Preparation of 4-f2.6-dichloro-benzoylamino)-lH-pyrazole-3-carboxylic acid piperidin-4-ylamide acetic acid salt EPO <DP n="96"/>To a solution of 4-(2,6-dichloro-benzoylamino)-lH-pyrazole-3-carboxylic acid piperidin-4-ylamide hydrochloride salt (20.6 g, 50 mmol) in water (500 ml) stirring at ambient temperature was added sodium bicarbonate (4.5 g, 53.5 mmol). The mixture was stirred for 1 hour and the solid formed collected by filtration and dried in vacuo azeotroping with toluene (x 3) to give the corresponding free base of 4- (2,6-dichloro-benzoylamino)-lH-pyrazole-3-carboxylic acid piperidin-4-ylamide.1H NMR (400 MHz, DMSO-J6) delta 10.20 (s, IH), 8.30 (s, IH), 8.25 (d, IH), 7.60 - 7.50 (m, 3H), 3.70 (m, IH), 3.00 (d, 2H), 2.50 (m, 2H), 1.70 (d, 2H), 1.50 (m, 2H).
With sodium hydrogencarbonate; In water; at 20.0℃; for 1.0h; To a solution of 4-(2,6-dichloro-benzoyIamino)-1H-pyrazole-3-carboxylic acid piperidin-4-ylamide hydrochloride salt (Example (237C) 20.6 g, 50 mmol) in water (500 ml) stirring at ambient temperature was added sodium bicarbonate (4.5 g, 53.5 mmol). The mixture was stirred for 1 hour and the solid formed collected by filtration and dried in vacuo azeotroping with toluene (x 3) to give the corresponding free base of 4-(2,6-dichloro- benzoylamino)-1H-pyrazole-3-carboxylic acid piperidin-4-ylamide.1H NMR (400 MHz, DMSO-d6) D 10.20 (s, 1 H), 8.30 (s, 1 H), 8.25 (d, 1 H), 7.60 - 7.50 (m, 3H), 3.70 (m, 1 H), 3.00 (d, 2H), 2.50 (m, 2H), 1.70 (d, 2H), 1.50 (m, 2H). To a solution of 4-(2,6-dichIoro-benzoylamino)-1H-pyrazole-3-carboxylic acid piperidin-4-ylamide hydrochloride salt (20.6 g, 50 mmol) in water (500 ml) stirring at ambient temperature was added sodium bicarbonate (4.5 g, 53.5 mmol). The mixture was stirred for 1 hour and the solid formed collected by filtration and dried in vacuo azeotroping with toluene (x 3) to give the corresponding free base of 4-(2,6-dichloro-benzoylamino)-1H- pyrazole-3-carboxylic acid piperidin-4-ylamide.1H NMR (400 MHz, DMSO-d6) delta 10.20 (s, 1H), 8.30 (s, 1H), 8.25 (d, 1H), 7.60-7.50 (m, 3H), 3.70 (m, 1H), 3.00 (d, 2H), 2.50 (m, 2H), 1.70 (d, 2H), 1.50 (m, 2H).
With sodium hydrogencarbonate; In water; at 20.0℃; for 1.0h; To a solution of 4-(2,6-dichloro-benzoyIamino)-1H-pyrazole-3-carboxylic acid piperidin-4-ylamide hydrochloride salt (Example (237C) 20.6 g, 50 mmol) in water (500 ml) stirring at ambient temperature was added sodium bicarbonate (4.5 g, 53.5 mmol). The mixture was stirred for 1 hour and the solid formed collected by filtration and dried in vacuo azeotroping with toluene (x 3) to give the corresponding free base of 4-(2,6-dichloro- benzoylamino)-1H-pyrazole-3-carboxylic acid piperidin-4-ylamide.1H NMR (400 MHz, DMSO-d6) D 10.20 (s, 1 H), 8.30 (s, 1 H), 8.25 (d, 1 H), 7.60 - 7.50 (m, 3H), 3.70 (m, 1 H), 3.00 (d, 2H), 2.50 (m, 2H), 1.70 (d, 2H), 1.50 (m, 2H). To a solution of 4-(2,6-dichIoro-benzoylamino)-1H-pyrazole-3-carboxylic acid piperidin-4-ylamide hydrochloride salt (20.6 g, 50 mmol) in water (500 ml) stirring at ambient temperature was added sodium bicarbonate (4.5 g, 53.5 mmol). The mixture was stirred for 1 hour and the solid formed collected by filtration and dried in vacuo azeotroping with toluene (x 3) to give the corresponding free base of 4-(2,6-dichloro-benzoylamino)-1H- pyrazole-3-carboxylic acid piperidin-4-ylamide.1H NMR (400 MHz, DMSO-d6) delta 10.20 (s, 1H), 8.30 (s, 1H), 8.25 (d, 1H), 7.60-7.50 (m, 3H), 3.70 (m, 1H), 3.00 (d, 2H), 2.50 (m, 2H), 1.70 (d, 2H), 1.50 (m, 2H).
With sodium hydrogencarbonate; In water; for 1.0h; To a solution of 4-(2,6-dichloro-benzoylamino)-1 H-pyrazole-3-carboxylic acid piperidin-4- ylamide hydrochloride salt (Example 2C) 20.6 g, 50 mmol) in water (500 ml) stirring at ambient temperature was added sodium bicarbonate (4.5 g, 53.5 mmol). The mixture was stirred for 1 hour and the solid formed collected by filtration and dried in vacuo azeotroping with toluene (x 3) to give the corresponding free base of 4-(2,6-dichloro-benzoylamino)-1H- pyrazole-3-carboxylic acid piperidin-4-ylamide.1H NMR (400 MHz, DMSO-d6) delta 10.20 (s, 1 H), 8.30 (s, 1 H), 8.25 (d, 1 H), 7.60 - 7.50 (m, 3H), 3.70 (m, 1 H), 3.00 (d, 2H), 2.50 (m, 2H), 1.70 (d, 2H), 1.50 (m, 2H).
With sodium hydrogencarbonate; In water; at 20.0℃; for 1.0h; To a solution of 4-(2,6-dichloro-benzoylamino)-1 H-pyrazole-3-carboxylic acid piperidin-4- ylamide hydrochloride salt (Example 2C) 20.6 g, 50 mmol) in water (500 ml) stirring at ambient temperature was added sodium bicarbonate (4.5 g, 53.5 mmol). The mixture was stirred for 1 hour and the solid formed collected by filtration and dried in vacuo azeotroping with toluene (x 3) to give the corresponding free base of 4-(2,6-dichloro-benzoylamino)-1 H- pyrazole-3-carboxylic acid piperidin-4-ylamide.1H NMR (400 MHz, DMSO-Cf6) delta 10.20 (s, 1H), 8.30 (s, 1H), 8.25 (d, 1 H), 7.60 - 7.50 (m, 3H), 3.70 (m, 1 H), 3.00 (d, 2H), 2.50 (m, 2H), 1.70 (d, 2H), 1.50 (m, 2H).To a stirred suspension of 4-(2,6-dichloro-benzoylamino)-1 H-pyrazole-3-carboxylic acid piperidin-4-ylamide (10.0 g, 26.2 mmol) in methanol (150 ml) was added glacial acetic acid (15 ml, 262 mmol) at ambient temperature. After 1 h, a clear solution was obtained which was reduced in vacuo azeotroping with toluene (x 2). The residue was then triturated with acetonitrile (2 x 100 ml) and the solid dried in vacuo to give 4-(2,6-dichloro-benzoylamino)- 1 H-pyrazole-3-carboxylic acid piperidin-4-ylamide acetic acid salt (10.3 g) as a white solid.
With sodium hydrogencarbonate; In water; at 20.0℃; for 1.0h;Product distribution / selectivity; To a solution of 4-(2,6-dichloro-benzoylamino)-1 H-pyrazole-3-carboxylic acid piperidin-4- ylamide hydrochloride salt (Example 2C) 20.6 g, 50 mmol) in water (500 ml) stirring at ambient temperature was added sodium bicarbonate (4.5 g, 53.5 mmol). The mixture was stirred for 1 hour and the solid formed collected by filtration and dried in vacuo azeotroping with toluene (x 3) to give the corresponding free base of 4-(2,6-dichloro-benzoylamino)-1 H- pyrazole-3-carboxylic acid piperidin-4-ylamide.

  • 9
  • AT7519 [ No CAS ]
  • [ 1828-66-6 ]
  • 4-(2,6-dichloro-benzoylamino)-1H-pyrazole-3-carboxylic acid [1-(morpholine-4-sulphonyl)-piperidin-4yl]-amide [ No CAS ]
YieldReaction ConditionsOperation in experiment
10% With triethylamine; In dichloromethane; at 0 - 50℃; for 18h; EXAMPLE 9 Synthesis of 4-(2,6-dichloro-benzoylaminoVl-H-pyrazole-3-carboxylic acid ["1- Cmorpholine-4-sulphonyl')-piperidin-4vn-amideTo morpholinium chloride (0.5 g, 4 mmol), was added triethylamine (6 ml, 40 mmol) and the mixture was stirred for 15 minutes at room temperature. Chloroform was added (10 ml), the mixture was cooled to -5 0C and chlorosulphonic acid(0.266 ml, 4 mmol) was added dropwise so as to maintain the temperature below 0 0C. The chloroform was evaporated and the mixture was treated with 0.03 mol of NaOH in 16 ml of water. The solution was evaporated to dryness to afford morpholine-4-sodium sulphamate. The crude material was dissolved in 1,2- dichloroethane (5 ml) and POCl3 (0.7ml, 8mmol) was added. The reaction mixture was heated at 80 0C for 18 hours. Petroleum ether and EtOAc were then added to the mixture and solids were removed by filtration. The filtrate was evaporated to dryness to afford morpholine sulphamoyl chloride. The resulting crude material was dissolved in DCM (30 ml), triethylamine (1 ml, 10 mmol) was added followed by the addition of 4-(2,6-dichloro-benzoylamino)-1H-pyrazole-3-carboxylic acid EPO <DP n="172"/>piperidin-4-ylamide hydrochloride (Preparation X) (1 g, 4 mmol) at 0 0C. The reaction mixture was stirred at room temperature for 16 hours, then added dioxane (5 ml) and heated at 50 C for 3 hours. The crude product was partitioned between EtOAc and water. The organic phase was dried over MgSO4, filtered and evaporated in vacuo. The residue was purified by by flash chromatography on silica eluting with EtOAc: hexane 1 :2 to 100% EtOAc to afford the title compound as white solid (130 mg, 10% over 3 steps) (LC/MS: Rt 2.80, [M+H]+ 531).
  • 10
  • [ 844443-90-9 ]
  • HCl-EtOAc [ No CAS ]
  • [ 844442-38-2 ]
  • AT7519 [ No CAS ]
YieldReaction ConditionsOperation in experiment
In methanol; ethyl acetate; 2C. 4-(2,6-dichloro-benzoylamino)-1H-pyrazole-3-carboxylic acid Piperidin-4-ylamide A solution of 4-[4-(2,6-dichloro-benzoylamino)-1H-pyrazole-3-carbonyl]-amino}-piperidine-1-carboxylic acid tert-butyl ester (7.9 g) in MeOH (50 mL) and EtOAc (50 ml) was treated with sat. HCl-EtOAc (40 mL) then stirred at r.t. overnight. The product did not crystallise due to the presence of methanol, and therefore the reaction mixture was evaporated and the residue triturated with EtOAc. The resulting off white solid was collected by filtration, washed with EtOAc and sucked dry on the sinter to give 6.3 g of 4-(2,6-dichloro-benzoylamino)-1H-pyrazole-3-carboxylic acid piperidin-4-ylamide as the hydrochloride salt. (LC/MS: Rt 5.89, [M+H]+ 382/384).
Same Skeleton Products
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