Triethylamine → 2,2-Dimethyl-propionic acid 3-methoxy-9-oxo-8-(2,4,6-trimethyl-phenyl)-2,3,4,5-tetrahydro-1H,9H-pyrazolo[1,2-a][1,2,5]triazepin-7-yl ester

HRID 924599ノート

反応式

HRID 924599 の反応式
[CH3:1][O:2][N:3]1[CH2:9][CH2:8][N:7]2[C:10](=[O:23])[CH:11]([C:14]3[C:19]([CH3:20])=[CH:18][C:17]([CH3:21])=[CH:16][C:15]=3[CH3:22])[C:12](=[O:13])[N:6]2[CH2:5][CH2:4]1.C(N(CC)CC)C.[CH3:31][C:32]([CH3:37])([CH3:36])[C:33](Cl)=[O:34]>CN(C)C1C=CN=CC=1.O1CCCC1>[CH3:1][O:2][N:3]1[CH2:4][CH2:5][N:6]2[C:12](=[O:13])[C:11]([C:14]3[C:15]([CH3:22])=[CH:16][C:17]([CH3:21])=[CH:18][C:19]=3[CH3:20])=[C:10]([O:23][C:33](=[O:34])[C:32]([CH3:37])([CH3:36])[CH3:31])[N:7]2[CH2:8][CH2:9]1

参加物

6

反応物 3

HCID 8471TriethylamineHCID 62493Pivaloyl chlorideHCID 867199153-Methoxy-8-(2,4,6-trimethyl-phenyl)-tetrahydro-pyrazolo[1,2-a][1,2,5]triazepine-7,9-dione

生成物 1

HCID 867199162,2-Dimethyl-propionic acid 3-methoxy-9-oxo-8-(2,4,6-trimethyl-phenyl)-2,3,4,5-tetrahydro-1H,9H-pyrazolo[1,2-a][1,2,5]triazepin-7-yl ester

試薬・触媒・溶媒 2

HCID 142844-(Dimethylamino)pyridine触媒HCID 8028Tetrahydrofuran溶媒

反応条件

温度
0 °C

実験手順

To a solution of 3-methoxy-8-(2,4,6-trimethyl-phenyl)-tetrahydro-pyrazolo[1,2-a][1,2,5]triazepine-7,9-dione (162 mg, 0.51 mmol), triethylamine (0.107 ml, 78 mg, 0.77 mmol) and a catalytic amount of 4-dimethylaminopyridine in tetrahydrofuran (4 ml) at 0° C. was added 2,2-dimethyl-propionyl chloride (pivaloyl chloride, 0.082 ml, 80 mg, 0.67 mmol) dropwise. The suspension was stirred at 0° C. for 45 minutes, the solvent evaporated and the residue diluted with ethyl acetate. The organic phase was washed with water and brine, dried over sodium sulfate and concentrated. Yield: 160 mg of 2,2-dimethyl-propionic acid 3-methoxy-9-oxo-8-(2,4,6-trimethyl-phenyl)-2,3,4,5-tetrahydro-1H,9H-pyrazolo[1,2-a][1,2,5]triazepin-7-yl ester (title compound P1.1) as an off-white solid, mp 147-148° C.

後処理

  1. customthe solvent evaporated
  2. additionthe residue diluted with ethyl acetate
  3. washThe organic phase was washed with water and brine
  4. dry with materialdried over sodium sulfate
  5. concentrationconcentrated

出典と根拠

ORDレコード
ord-2f8c034b6d6d4182ba12528a86639faa
出典データセット
uspto-grants-2016_03
特許番号
US09282743B2

反応ノート

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