N-Methylethylamine → N4-ethyl-N4,1-dimethyl-N5-(2-phenyl-[1,2,4]triazolo[1,5-a]pyridin-7-yl)-1H-pyrazole-4,5-dicarboxamide

HRID 1802143ノート

反応式

HRID 1802143 の反応式
[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]([OH:27])=O)[CH:4]=[N:3]1.[CH2:28]([NH:30][CH3:31])[CH3:29].CCCP(=O)=O>O1CCCC1.C(OCC)(=O)C>[CH2:28]([N:30]([CH3:31])[C:25]([C:5]1[CH:4]=[N:3][N:2]([CH3:1])[C:6]=1[C:7]([NH:8][C:9]1[CH:14]=[CH:13][N:12]2[N:15]=[C:16]([C:18]3[CH:19]=[CH:20][CH:21]=[CH:22][CH:23]=3)[N:17]=[C:11]2[CH:10]=1)=[O:24])=[O:27])[CH3:29]

参加物

6

反応物 3

HCID 12219N-MethylethylamineHCID 16167369Propylphosphoric anhydrideHCID 573789541-methyl-5-(2-phenyl-[1,2,4]triazolo[1,5-a]pyridin-7-ylcarbamoyl)-1H-pyrazole-4-carboxylic acid

生成物 1

HCID 57378956N4-ethyl-N4,1-dimethyl-N5-(2-phenyl-[1,2,4]triazolo[1,5-a]pyridin-7-yl)-1H-pyrazole-4,5-dicarboxamide収率 54.6%

試薬・触媒・溶媒 2

HCID 8028Tetrahydrofuran溶媒HCID 8857Ethyl Acetate溶媒

反応条件

温度
70 °C

実験手順

A mixture of 1-methyl-5-(2-phenyl-[1,2,4]triazolo[1,5-a]pyridin-7-ylcarbamoyl)-1H-pyrazole-4-carboxylic acid (600 mg, 1.66 mmol), N-ethylmethylamine (427 ul, 4.97 mmole), N-diisopropylethylamine (868 ul, 4.97 mmol) and propylphosphonic anhydride (50% in ethyl acetate, 2.44 ml, 4.14 mmol) in tetrahydrofurane (30 ml) is stirred for 2 hours at 70° C. The cooled solution is diluted with ethyl acetate, washed once with sat. aqueous sodium bicarbonate solution, once with brine, dried with magnesium sulfate and evaporated to dryness. Two successive crystallizations of the residue (680 mg white solid) from ethyl acetate afford N4-ethyl-N4,1-dimethyl-N5-(2-phenyl-[1,2,4]triazolo[1,5-a]pyridin-7-yl)-1H-pyrazole-4,5-dicarboxamide (365 mg, 54.6%) as a white solid. mp.: 193-4° C. MS: m/z=404.3 (M+H+).

後処理

  1. washwashed once with sat. aqueous sodium bicarbonate solution, once with brine
  2. dry with materialdried with magnesium sulfate
  3. customevaporated to dryness
  4. customTwo successive crystallizations of the residue (680 mg white solid) from ethyl acetate

出典と根拠

ORDレコード
ord-a5639e7330b74f1ca8e0ff136af6af50
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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