Triethylamine → Carbonic acid ethyl ester 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 924603노트

반응식

HRID 924603 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.Cl[C:32]([O:34][CH2:35][CH3:36])=[O:33]>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:32](=[O:33])[O:34][CH2:35][CH3:36])[N:7]2[CH2:8][CH2:9]1

참가 물질

6

반응물 3

HCID 8471Triethylamine2회HCID 10928Ethyl chloroformate2회HCID 867199153-Methoxy-8-(2,4,6-trimethyl-phenyl)-tetrahydro-pyrazolo[1,2-a][1,2,5]triazepine-7,9-dione

생성물 1

HCID 71479406Carbonic acid ethyl ester 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 (106 mg, 0.33 mmol), triethylamine (0.070 ml, 51 mg, 0.50 mmol) and a catalytic amount of 4-dimethylaminopyridine in tetrahydrofuran (2 ml) at 0° C. was added ethyl chloroformate (0.035 ml, 40 mg, 0.37 mmol) dropwise. The suspension was stirred at 0° C. for 20 minutes, treated with more triethylamine (0.070 ml, 51 mg, 0.50 mmol) and ethyl chloroformate (0.035 ml, 40 mg, 0.37 mmol) dropwise, and further stirred at 0° C. for 10 minutes. The solvent was evaporated, the residue diluted with ethyl acetate, the organic phase washed with water and brine, dried over sodium sulfate and concentrated. The gummy residue was triturated in cyclohexane and diethyl ether, stirred at room temperature, filtered and dried. Yield: 100 mg of carbonic acid ethyl ester 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 P1.2) as a pale yellow solid.

후처리

  1. stirringfurther stirred at 0° C. for 10 minutes
  2. customThe solvent was evaporated
  3. additionthe residue diluted with ethyl acetate
  4. washthe organic phase washed with water and brine
  5. dry with materialdried over sodium sulfate
  6. concentrationconcentrated
  7. customThe gummy residue was triturated in cyclohexane
  8. stirringdiethyl ether, stirred at room temperature
  9. filtrationfiltered
  10. customdried

출처 및 근거

ORD 기록
ord-ed890791412249ab8bb781b0334e5486
출처 데이터셋
uspto-grants-2016_03
특허 번호
US09282743B2

반응 노트

불러오는 중…