Diisopropylethylamine → 7-{[4-(azetidine-1-carbonyl)-2-methyl-2H-pyrazole-3-carbonyl]-amino}-[1,2,4]triazolo[1,5-a]pyridine-2-carboxylic acid ethyl ester

HRID 1802193ノート

反応式

HRID 1802193 の反応式
[NH2:1][C:2]1[CH:7]=[CH:6][N:5]2[N:8]=[C:9]([C:11]([O:13][CH2:14][CH3:15])=[O:12])[N:10]=[C:4]2[CH:3]=1.[N:16]1([C:20]([C:22]2[CH:23]=[N:24][N:25]([CH3:30])[C:26]=2[C:27](O)=[O:28])=[O:21])[CH2:19][CH2:18][CH2:17]1.CCCP(=O)=O.C(N(C(C)C)CC)(C)C>O1CCCC1>[CH2:14]([O:13][C:11]([C:9]1[N:10]=[C:4]2[CH:3]=[C:2]([NH:1][C:27]([C:26]3[N:25]([CH3:30])[N:24]=[CH:23][C:22]=3[C:20]([N:16]3[CH2:19][CH2:18][CH2:17]3)=[O:21])=[O:28])[CH:7]=[CH:6][N:5]2[N:8]=1)=[O:12])[CH3:15]

参加物

6

反応物 4

HCID 81531DiisopropylethylamineHCID 16167369Propylphosphoric anhydrideHCID 58446922HCID 58446922、化合物HCID 67776028Ethyl 7-amino-[1,2,4]triazolo[1,5-a]pyridine-2-carboxylate

生成物 1

HCID 677752457-{[4-(azetidine-1-carbonyl)-2-methyl-2H-pyrazole-3-carbonyl]-amino}-[1,2,4]triazolo[1,5-a]pyridine-2-carboxylic acid ethyl ester収率 63.9%

試薬・触媒・溶媒 1

HCID 8028Tetrahydrofuran溶媒

実験手順

A mixture of ethyl 7-amino-[1,2,4]triazolo[1,5-a]pyridine-2-carboxylate (540 mg, 2.62 mmol), 4-(azetidine-1-carbonyl)-1-methyl-1H-pyrazole-5-carboxylic acid (548 mg, 2.62 mmol), propylphosphonic anhydride (50% in ethyl acetate, 3.86 ml, 6.55 mmol) and diisopropylethylamine (1.37 ml, 7.86 mmol) in tetrahydrofurane (10 ml) is refluxed for 18 hours. The solvent is evaporated and the residue triturated with sat. aqueous sodium hydrogencarbonate solution. The precipitated solid is collected by filtration, washed several times with water and dried affording 7-{[4-(azetidine-1-carbonyl)-2-methyl-2H-pyrazole-3-carbonyl]-amino}-[1,2,4]triazolo[1,5-a]pyridine-2-carboxylic acid ethyl ester (665 mg, 63.9%) as a light brown solid. mp.: 252-5° C. MS: m/z=398.2 (M+H+).

後処理

  1. temperatureis refluxed for 18 hours
  2. customThe solvent is evaporated
  3. customthe residue triturated with sat. aqueous sodium hydrogencarbonate solution
  4. filtrationThe precipitated solid is collected by filtration
  5. washwashed several times with water
  6. customdried

出典と根拠

ORDレコード
ord-75502040c1d3433d8c7c67fb2ddc3f38
出典データセット
uspto-grants-2013_01
特許番号
US08349824B2

反応ノート

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