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 924599노트

반응식

HRID 924599 반응식
[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

참가 물질

6

반응물 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

생성물 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

시약·촉매·용매 2

HCID 142844-(Dimethylamino)pyridine촉매HCID 8028Tetrahydrofuran용매

반응 조건

온도
0 °C

실험 절차

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.

후처리

  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

출처 및 근거

ORD 기록
ord-2f8c034b6d6d4182ba12528a86639faa
출처 데이터셋
uspto-grants-2016_03
특허 번호
US09282743B2

반응 노트

불러오는 중…