Triethylamine → Ethyl 2-(2-(3-amino-6-(4-(isopropylsulfonyl)phenyl)pyrazine-2-carbonyl)hydrazinyl)-2-oxoacetate

HRID 78655

반응식

HRID 78655 반응식
[NH2:1][C:2]1[C:3]([C:20]([NH:22][NH2:23])=[O:21])=[N:4][C:5]([C:8]2[CH:13]=[CH:12][C:11]([S:14]([CH:17]([CH3:19])[CH3:18])(=[O:16])=[O:15])=[CH:10][CH:9]=2)=[CH:6][N:7]=1.CCN(CC)CC.Cl[C:32](=[O:38])[C:33]([O:35][CH2:36][CH3:37])=[O:34]>C1COCC1>[NH2:1][C:2]1[C:3]([C:20]([NH:22][NH:23][C:32](=[O:38])[C:33]([O:35][CH2:36][CH3:37])=[O:34])=[O:21])=[N:4][C:5]([C:8]2[CH:9]=[CH:10][C:11]([S:14]([CH:17]([CH3:19])[CH3:18])(=[O:15])=[O:16])=[CH:12][CH:13]=2)=[CH:6][N:7]=1

참가 물질

5

반응물 3

HCID 8471TriethylamineHCID 20884Ethoxalyl chlorideHCID 594716323-Amino-6-(4-isopropylsulfonylphenyl)pyrazine-2-carbohydrazide

생성물 1

HCID 59472330Ethyl 2-(2-(3-amino-6-(4-(isopropylsulfonyl)phenyl)pyrazine-2-carbonyl)hydrazinyl)-2-oxoacetate수율 58.5%

시약·촉매·용매 1

HCID 8028Tetrahydrofuran용매

실험 절차

3-amino-6-(4-isopropylsulfonylphenyl)pyrazine-2-carbohydrazide (2 g, 5.963 mmol) and Et3N (1.810 g, 2.493 mL, 17.89 mmol) were dissolved in THF (128.0 mL) and treated dropwise with ethyl 2-chloro-2-oxo-acetate (814.2 mg, 666.3 μL, 5.963 mmol) at 0° C. The reaction mixture was warmed slowly to room temperature and stirred for 1.5 h. The reaction mixture was filtered and grey solid washed with THF. The filtrate was evaporated to dryness azeotroping with acetonitrile. Then residue was then triturated with acetonitrile to give the product as a yellow solid (1.52 g, 58%); 1H NMR (400 MHZ, DMSO) d 1.19 (m, 6H), 1.32 (m, 3H), 3.34 (m, 1H), 4.32 (m, 2H), 7.88 (m, 2H), 8.56 (m, 2H), 9.07 (s, 1H), 10.95 (s, 1H) and 11.05 (s, 1H) ppm; MS (ES+) 436.32

후처리

  1. filtrationThe reaction mixture was filtered
  2. washgrey solid washed with THF
  3. customThe filtrate was evaporated to dryness
  4. customazeotroping with acetonitrile
  5. customThen residue was then triturated with acetonitrile

출처 및 근거

ORD 기록
ord-4b4f714610f449a0801f1607f809f9fe
출처 데이터셋
uspto-grants-2014_09
특허 번호
US08841308B2

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