Diisopropylethylamine → ethyl 5-(2-(dimethylamino)-[1,2,4]triazolo[1,5-a]pyridin-7-ylcarbamoyl)-1-methyl-1H-pyrazole-4-carboxylate

HRID 1802205ノート

反応式

HRID 1802205 の反応式
[CH3:1][N:2]([CH3:13])[C:3]1[N:12]=[C:6]2[CH:7]=[C:8]([NH2:11])[CH:9]=[CH:10][N:5]2[N:4]=1.[CH2:14]([O:16][C:17]([C:19]1[CH:20]=[N:21][N:22]([CH3:27])[C:23]=1[C:24](O)=[O:25])=[O:18])[CH3:15].CCCP(=O)=O.C(N(C(C)C)CC)(C)C>O1CCCC1>[CH3:1][N:2]([CH3:13])[C:3]1[N:12]=[C:6]2[CH:7]=[C:8]([NH:11][C:24]([C:23]3[N:22]([CH3:27])[N:21]=[CH:20][C:19]=3[C:17]([O:16][CH2:14][CH3:15])=[O:18])=[O:25])[CH:9]=[CH:10][N:5]2[N:4]=1

参加物

6

反応物 4

HCID 81531DiisopropylethylamineHCID 16167369Propylphosphoric anhydrideHCID 252475674-(Ethoxycarbonyl)-1-methyl-1H-pyrazole-5-carboxylic acidHCID 67774846N2,N2-dimethyl-[1,2,4]triazolo[1,5-a]pyridine-2,7-diamine

生成物 1

HCID 67774271ethyl 5-(2-(dimethylamino)-[1,2,4]triazolo[1,5-a]pyridin-7-ylcarbamoyl)-1-methyl-1H-pyrazole-4-carboxylate収率 89.3%

試薬・触媒・溶媒 1

HCID 8028Tetrahydrofuran溶媒

実験手順

A mixture of N2,N2-dimethyl-[1,2,4]triazolo[1,5-a]pyridine-2,7-diamine (700 mg, 3.95 mmol), 4-(ethoxycarbonyl)-1-methyl-1H-pyrazole-5-carboxylic acid (812 mg, 4.1 mmol), propylphosphonic anhydride (50% in ethyl acetate, 5.82 ml, 9.88 mmol) and diisopropylethylamine (2.07 ml, 11.9 mmol) in tetrahydrofurane (40 ml) is refluxed for 18 hours under nitrogen atmosphere. The solvent is evaporated and the residue triturated with sat. aqueous sodium hydrogencarbonate solution. The solid is collected by filtration, washed with water and dried affording ethyl 5-(2-(dimethylamino)-[1,2,4]triazolo[1,5-a]pyridin-7-ylcarbamoyl)-1-methyl-1H-pyrazole-4-carboxylate (1.26 g, 89.3%) as a light brown solid. Mp.: 193-5° C. MS: m/z=358.4 (M+H+).

後処理

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

出典と根拠

ORDレコード
ord-60bb7fab0f7f4748ab48af2a2db9743e
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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