Potassium tert-butoxide → (7S,8aS)-tert-butyl 7-(5-cyclopropylpyrazin-2-yloxy)hexahydropyrrolo[1,2-a]pyrazine-2(1H)-carboxylate

HRID 240436노트

반응식

HRID 240436 반응식
[OH:1][C@@H:2]1[CH2:17][N:5]2[CH2:6][CH2:7][N:8]([C:10]([O:12][C:13]([CH3:16])([CH3:15])[CH3:14])=[O:11])[CH2:9][C@@H:4]2[CH2:3]1.CC(C)([O-])C.[K+].Br[C:25]1[CH:30]=[N:29][C:28]([CH:31]2[CH2:33][CH2:32]2)=[CH:27][N:26]=1>O1CCCC1>[CH:31]1([C:28]2[N:29]=[CH:30][C:25]([O:1][C@@H:2]3[CH2:17][N:5]4[CH2:6][CH2:7][N:8]([C:10]([O:12][C:13]([CH3:14])([CH3:16])[CH3:15])=[O:11])[CH2:9][C@@H:4]4[CH2:3]3)=[N:26][CH:27]=2)[CH2:33][CH2:32]1

참가 물질

5

반응물 3

HCID 23665647Potassium tert-butoxideHCID 457876352-Bromo-5-cyclopropylpyrazineHCID 72698247(7S,8aS)-tert-butyl 7-hydroxyhexahydropyrrolo[1,2-a]pyrazine-2(1H)-carboxylate

생성물 1

HCID 86680448(7S,8aS)-tert-butyl 7-(5-cyclopropylpyrazin-2-yloxy)hexahydropyrrolo[1,2-a]pyrazine-2(1H)-carboxylate

시약·촉매·용매 1

HCID 8028Tetrahydrofuran용매2회

실험 절차

To a solution of (7S,8aS)-tert-butyl 7-hydroxyhexahydropyrrolo[1,2-a]pyrazine-2(1H)-carboxylate (Wuxi Pharma, 0.485 g, 2 mmol) in tetrahydrofuran (0.3 mL) was added potassium tert-butoxide (2.8 mL, 1 M in tetrahydrofuran, 2.8 mmol) followed by a solution of 2-bromo-5-cyclopropylpyrazine (446 mg, 2.24 mmol) in tetrahydrofuran (1 mL). The mixture was stirred at room temperature for 16 hours. The mixture was concentrated, and the residue was purified by chromatography on silica gel (ethyl acetate) to give the titled compound. 1H NMR (400 MHz, DMSO-d6) δ ppm 0.80 (m, 2H), 0.92 (m, 2H), 1.39 (s, 9H), 1.90 (m, 2H), 2.09 (m, 1H), 2.40 (m, 3H), 2.90 (m, 2H), 3.08 (m, 1H), 3.28 (m, 1H), 3.86-4.08 (m, 2H), 5.27 (m, 1H), 8.11 (m, 2H); MS (ESI) m/z 361 (M+H)+.

후처리

  1. concentrationThe mixture was concentrated
  2. customthe residue was purified by chromatography on silica gel (ethyl acetate)

출처 및 근거

ORD 기록
ord-16b8b299b1784d15a9c457e7d3af0a19
출처 데이터셋
uspto-grants-2014_02
특허 번호
US08648074B2

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