Diisopropylethylamine → 4-(3-Methoxyazetidine-1-carbonyl)-1-methyl-N-(2-phenyl-[1,2,4]triazolo[1,5-a]pyridin-7-yl)-1H-pyrazole-5-carboxamide

HRID 1802174Notes

Reaction equation

HRID 1802174 reaction equation
[CH3:1][N:2]1[C:6]([C:7](=[O:24])[NH:8][C:9]2[CH:14]=[CH:13][N:12]3[N:15]=[C:16]([C:18]4[CH:23]=[CH:22][CH:21]=[CH:20][CH:19]=4)[N:17]=[C:11]3[CH:10]=2)=[C:5]([C:25](O)=[O:26])[CH:4]=[N:3]1.Cl.[CH3:29][O:30][CH:31]1[CH2:34][NH:33][CH2:32]1.C(N(C(C)C)CC)(C)C.CCCP(=O)=O>O1CCCC1>[CH3:29][O:30][CH:31]1[CH2:34][N:33]([C:25]([C:5]2[CH:4]=[N:3][N:2]([CH3:1])[C:6]=2[C:7]([NH:8][C:9]2[CH:14]=[CH:13][N:12]3[N:15]=[C:16]([C:18]4[CH:19]=[CH:20][CH:21]=[CH:22][CH:23]=4)[N:17]=[C:11]3[CH:10]=2)=[O:24])=[O:26])[CH2:32]1

Participants

6

Reactant 4

HCID 81531DiisopropylethylamineHCID 16167369Propylphosphoric anhydrideHCID 222428583-Methoxyazetidine hydrochlorideHCID 573789541-methyl-5-(2-phenyl-[1,2,4]triazolo[1,5-a]pyridin-7-ylcarbamoyl)-1H-pyrazole-4-carboxylic acid

Product 1

HCID 573776294-(3-Methoxyazetidine-1-carbonyl)-1-methyl-N-(2-phenyl-[1,2,4]triazolo[1,5-a]pyridin-7-yl)-1H-pyrazole-5-carboxamideYield 66.6%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Conditions

Temperature
70 °C

Procedure

A mixture of 1-methyl-5-(2-phenyl-[1,2,4]triazolo[1,5-a]pyridin-7-ylcarbamoyl)-1H-pyrazole-4-carboxylic acid (100 mg, 276 μmol), 3-methoxyazetidine hydrochloride (37.5 mg, 304 μmol), diisopropylethylamine (241 μl, 1.38 mmol) and propylphosphonic anhydride (50% in ethyl acetate, 407 μl, 690 μmol) in tetrahydrofurane (7.00 ml) is stirred for 3 hours at 70° C. under nitrogen atmosphere in a closed vessel, and then over the weekend at room temperature. The solvent is evaporated and to the residue is added sat. aqueous sodium hydrogencarbonate solution. The mixture is stirred for 20 minutes while a white solid precipitates. The solid is collected by filtration, washed with diethylether and dried affording 4-(3-Methoxyazetidine-1-carbonyl)-1-methyl-N-(2-phenyl-[1,2,4]triazolo[1,5-a]pyridin-7-yl)-1H-pyrazole-5-carboxamide (75 mg, 66.6%) as a very insoluble white solid. mp.: 269-270° C. MS: m/z=432.3 (M+H+).

Workup

  1. customat room temperature
  2. customThe solvent is evaporated and to the residue
  3. additionis added sat. aqueous sodium hydrogencarbonate solution
  4. stirringThe mixture is stirred for 20 minutes while a white solid
  5. customprecipitates
  6. filtrationThe solid is collected by filtration
  7. washwashed with diethylether
  8. customdried

Sources & evidence

ORD record
ord-a480d172d501421eb22219738f89528c
Source dataset
uspto-grants-2013_01
Patent number
US08349824B2

Reaction notes

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