Diisopropylethylamine → 4-(1,4-diaza-bicyclo[3.2.1]octane-4-carbonyl)-2-methyl-2H-pyrazole-3-carboxylic acid (2-phenyl-[1,2,4]triazolo[1,5-a]pyridin-7-yl)-amide

HRID 1802309Notes

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.Cl.[N:30]12[CH2:37][CH:34]([CH2:35][CH2:36]1)[NH:33][CH2:32][CH2:31]2.CCCP(=O)=O.C(N(CC)C(C)C)(C)C>O1CCCC1>[C:18]1([C:16]2[N:17]=[C:11]3[CH:10]=[C:9]([NH:8][C:7]([C:6]4[N:2]([CH3:1])[N:3]=[CH:4][C:5]=4[C:25]([N:33]4[CH:34]5[CH2:37][N:30]([CH2:36][CH2:35]5)[CH2:31][CH2:32]4)=[O:26])=[O:24])[CH:14]=[CH:13][N:12]3[N:15]=2)[CH:23]=[CH:22][CH:21]=[CH:20][CH:19]=1

Participants

Conditions

Temperature: 25 °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), 1,4-diazabicyclo[3.2.1]octane dihydrochloride (102 mg, 552 μmol), propylphosphonic anhydride (50% in ethyl acetate, 407 μl, 690 μmol) and N,N-diisopropylethylamine (469 μl, 2.76 mmol) in tetrahydrofuran (4.5 ml) was stirred overnight at 25° C. The mixture was applied on basic silica gel and purified by column chromatography using dichloromethane/methanol 19:1 as eluent to give 4-(1,4-diaza-bicyclo[3.2.1]octane-4-carbonyl)-2-methyl-2H-pyrazole-3-carboxylic acid (2-phenyl-[1,2,4]triazolo[1,5-a]pyridin-7-yl)-amide (45 mg, 35.7%) as a white solid. mp: 110.1, MS: m/z=457.2 (M+H+).

Workup

custompurified by column chromatography

Sources & evidence

ORD record: ord-8cb0a7e898234fb7813690330110e5f3
Source dataset: uspto-grants-2013_01
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08349824B2

Reaction notes

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