4-(Bromomethyl)-1,2-difluorobenzene → n-(3,4-Difluoro-benzyl)-n-(6-methoxy-benzo[b]thiophen-2-yl)-pyridin-3-yl-sulfonamide

HRID 57152노트

반응식

HRID 57152 반응식
[CH3:1][O:2][C:3]1[CH:4]=[CH:5][C:6]2[CH:10]=[C:9]([NH:11][S:12]([C:15]3[CH:16]=[N:17][CH:18]=[CH:19][CH:20]=3)(=[O:14])=[O:13])[S:8][C:7]=2[CH:21]=1.CC(C)([O-])C.[K+].[F:28][C:29]1[CH:30]=[C:31]([CH:34]=[CH:35][C:36]=1[F:37])[CH2:32]Br>C1COCC1.CCOC(C)=O>[F:28][C:29]1[CH:30]=[C:31]([CH:34]=[CH:35][C:36]=1[F:37])[CH2:32][N:11]([C:9]1[S:8][C:7]2[CH:21]=[C:3]([O:2][CH3:1])[CH:4]=[CH:5][C:6]=2[CH:10]=1)[S:12]([C:15]1[CH:16]=[N:17][CH:18]=[CH:19][CH:20]=1)(=[O:14])=[O:13]

참가 물질

6

반응물 3

HCID 5814364-(Bromomethyl)-1,2-difluorobenzeneHCID 23665647Potassium tert-butoxideHCID 57920429n-(6-Methoxy-benzo[b]thiophen-2-yl)-pyridin-3-yl-sulfonamide

생성물 1

HCID 57920574n-(3,4-Difluoro-benzyl)-n-(6-methoxy-benzo[b]thiophen-2-yl)-pyridin-3-yl-sulfonamide수율 66%

시약·촉매·용매 2

HCID 8028Tetrahydrofuran용매2회HCID 8857Ethyl Acetate용매

실험 절차

To a solution of compound 141-F (0.488 g; 1.52 mmol) in THF (15 mL) was added 1M potassium tert-butoxide (2.28 mL; 2.28 mmol) and the reaction mixture was stirred at ambient temperature for 30 min. 3,4-Difluorobenzyl bromide (0.409 g; 1.97 mmol), dissolved in THF (1.0 mL), was added drop-wise, and the reaction was stirred at ambient temperature for 18 h. The reaction was diluted with EtOAc, washed with 2N HCl, water, brine, dried over Na2SO4, filtered, the solvent evaporated under reduced pressure. The crude residue was purified by flash column chromatography (SiO2) eluting with a heptane-EtOAc gradient to afford an oily semi-solid, which was further purified by reverse-phase semi-prep HPLC (Gemini, C-18 column; 100×30 mm I.D.; 5μ) eluting with a 55% to 75% MeCN—H2O gradient to afford compound 141-G as a white solid (0.447 g, 66%). 1H-NMR (DMSO-d6): δ 3.76 (s, 3H), 4.89 (s, 2H), 6.93-6.96 (m, 1H), 7.11 (s, 1H), 7.19-7.20 (m, 1H), 7.34-7.43 (m, 3H), 7.60-7.62 (d, 1H), 7.70-7.73 (m, 1H), 8.21-8.24 (m, 1H), 8.93-8.96 (m, 2H); MS: m/z 447.0 (MH+).

후처리

  1. additionwas added drop-wise
  2. stirringthe reaction was stirred at ambient temperature for 18 h
  3. washwashed with 2N HCl, water, brine
  4. dry with materialdried over Na2SO4
  5. filtrationfiltered
  6. customthe solvent evaporated under reduced pressure
  7. customThe crude residue was purified by flash column chromatography (SiO2)
  8. washeluting with a heptane-EtOAc gradient
  9. customto afford an oily semi-solid, which
  10. customwas further purified by reverse-phase semi-prep HPLC (Gemini, C-18 column; 100×30 mm I.D.; 5μ)
  11. washeluting with a 55% to 75% MeCN—H2O gradient

출처 및 근거

ORD 기록
ord-c102e12fb4eb4b879e575d8d4a1cc1c9
출처 데이터셋
uspto-grants-2016_09
특허 번호
US09434711B2

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