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Methanol → (3S,9aS)-tert-butyl 3-(4-methyl-1-oxo-1,3-dihydroisobenzofuran-5-yl)hexahydropyrazino[2,1-c][1,4]thiazine-8(1H)-carboxylate

HRID 1502045
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인쇄 미리보기

반응식

HRID 1502045 반응식
C([S:4][CH2:5][C@H:6]1[N:11]([CH2:12][CH:13](Cl)[C:14]2[C:15]([CH3:24])=[C:16]3[C:20](=[CH:21][CH:22]=2)[C:19](=[O:23])[O:18][CH2:17]3)[CH2:10][CH2:9][N:8]([C:26]([O:28][C:29]([CH3:32])([CH3:31])[CH3:30])=[O:27])[CH2:7]1)(=O)C.C[O-].[Na+].CO>C1COCC1>[CH3:24][C:15]1[C:14]([C@@H:13]2[S:4][CH2:5][C@@H:6]3[CH2:7][N:8]([C:26]([O:28][C:29]([CH3:32])([CH3:31])[CH3:30])=[O:27])[CH2:9][CH2:10][N:11]3[CH2:12]2)=[CH:22][CH:21]=[C:20]2[C:16]=1[CH2:17][O:18][C:19]2=[O:23]
참가 물질실험 절차출처 및 근거반응 노트

참가 물질

5

반응물 3

HCID 887MethanolHCID 10942334Sodium MethoxideHCID 86727080(3S)-tert-butyl 3-(acetylthiomethyl)-4-(2-chloro-2-(4-methyl-1-oxo-1,3-dihydroisobenzofuran-5-yl)ethyl)piperazine-1-carboxylate

생성물 1

HCID 71273525(3S,9aS)-tert-butyl 3-(4-methyl-1-oxo-1,3-dihydroisobenzofuran-5-yl)hexahydropyrazino[2,1-c][1,4]thiazine-8(1H)-carboxylate

시약·촉매·용매 1

HCID 8028
Tetrahydrofuran
용매

실험 절차

A solution of (3S)-tert-butyl 3-(acetylthiomethyl)-4-(2-chloro-2-(4-methyl-1-oxo-1,3-dihydroisobenzofuran-5-yl)ethyl)piperazine-1-carboxylate (596 mg, 1.234 mmol) in anhydrous THF (20 mL) was treated dropwise with sodium methoxide, 25% solution in methanol (0.846 mL, 3.70 mmol). The reaction mixture was stirred for 2 hours under nitrogen at room temperature. LCMS showed formation of the desired product. Solvent was removed under reduced pressure. Residue was redissolved in dichloromethane and washed with brine. Organic layer was dried over MgSO4, filtered and concentrated. Residue was purified on Biotage SP 1, eluting with 20-80% ethyl acetate/hexanes, 16 CV (CV stands for column volume): 1H NMR (500 MHz, CDCl3) δ 8.64 (d, J=8.0 Hz, 1H), 7.77 (d, J=8.0 Hz, 1H), 5.29 (s, 2H), 3.81-4.20 (m, 3H), 3.38 (dd, J=2.3, 12.6 Hz), 3.00-3.22 (m, 2H), 2.57-2.82 (m, 2H), 2.24-2.56 (m, 7H), 1.51 (s, 9H).

출처 및 근거

ORD 기록
ord-3cc8c944e5944f28bfc3b78a7bc2aec4
출처 데이터셋
uspto-grants-2015_12
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US09206199B2

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