Ethanol → 4-(4-(furan-3-yl)phenoxy)benzenesulfonyl-tetrahydro-2H-1,4-thiazine-3-carboxylic acid

HRID 23173

반응식

HRID 23173 반응식
Br[C:2]1[CH:26]=[CH:25][C:5]([O:6][C:7]2[CH:12]=[CH:11][C:10]([S:13]([CH:16]3[CH:21]([C:22]([OH:24])=[O:23])[NH:20][CH2:19][CH2:18][S:17]3)(=[O:15])=[O:14])=[CH:9][CH:8]=2)=[CH:4][CH:3]=1.[O:27]1[CH:31]=[CH:30][C:29](B(O)O)=[CH:28]1.C(O)C>C1C=CC=CC=1.C(=O)([O-])[O-].[Na+].[Na+].C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1>[O:27]1[CH:31]=[CH:30][C:29]([C:2]2[CH:26]=[CH:25][C:5]([O:6][C:7]3[CH:8]=[CH:9][C:10]([S:13]([CH:16]4[CH:21]([C:22]([OH:24])=[O:23])[NH:20][CH2:19][CH2:18][S:17]4)(=[O:15])=[O:14])=[CH:11][CH:12]=3)=[CH:4][CH:3]=2)=[CH:28]1

참가 물질

7

반응물 3

HCID 702EthanolHCID 2734358Furan-3-boronic acidHCID 865886714-(4-bromophenoxy)benzenesulfonyl-tetrahydro-2H-1,4-thiazine-3-carboxylic acid

생성물 1

HCID 865886704-(4-(furan-3-yl)phenoxy)benzenesulfonyl-tetrahydro-2H-1,4-thiazine-3-carboxylic acid수율 67%

시약·촉매·용매 3

HCID 178418397HCID 178418397, 화합물촉매HCID 241Benzene용매HCID 10340Sodium Carbonate용매

반응 조건

온도
80 °C

실험 절차

A mixture of 0.45 g (1.0 mmol) of 3(S)-4-(4-(4-bromophenoxy)benzenesulfonyl-tetrahydro-2H-1,4-thiazine-3-carboxylic acid and 0.11 g (1.0 mmol) of 3-furan boronic acid (J. Org. Chem. 1984, 49, 5237-5243) in 2 mL of benzene, 2 mL of 2M aq. sodium carbonate, and 1.5 mL of ethanol was deoxygenated with a stream of argon for 15 minutes, and then 115 mg (0.1 mmol) of tetrakis(triphenylphosphine)palladium was added and the mixture was heated at 80° C. for six days. After cooling to room temperature, the mixture was partitioned between ethyl acetate and pH 4 citrate buffer. The aqueous layer was extracted twice with ethyl acetate, and the combined organic layers were washed with brine, dried over sodium sulfate, and concentrated. The residue was purified by chromatography on silica gel, eluting with a gradient from dichloromethane to 5% methanol in dichloromethane, to provide 3(S)-4-(4-(4-(furan-3-yl)phenoxy)benzenesulfonyl-tetrahydro-2H-1,4-thiazine-3-carboxylic acid (0.317 g, 67%) as a sticky solid foam. FAB+MS Calcd for M+Cs+=606.0021. Obs 606.0036; 1H NMR (CDCl3) δ 7.72-7.43 (m, 6H), 7.04 (d, 2H, J=8.46 Hz), 7.00 (d, 2H, J=8.82 Hz), 6.67 (s, 1H), 4.51 (s, 1H), 4.1-3.9 (bm, 1H), 3.7-3.6 (bm, 1H), 3.2-3.1 (bm, 1H), 2.42 (bd, 1H, J=12.87 Hz), 1.61 (s, 3H), 1.38 (s, 3H)

후처리

  1. customwas deoxygenated with a stream of argon for 15 minutes
  2. temperatureAfter cooling to room temperature
  3. customthe mixture was partitioned between ethyl acetate and pH 4 citrate buffer
  4. extractionThe aqueous layer was extracted twice with ethyl acetate
  5. washthe combined organic layers were washed with brine
  6. dry with materialdried over sodium sulfate
  7. concentrationconcentrated
  8. customThe residue was purified by chromatography on silica gel
  9. washeluting with a gradient from dichloromethane to 5% methanol in dichloromethane

출처 및 근거

ORD 기록
ord-4680cbedb8364560ab87f775821d48ad
출처 데이터셋
uspto-grants-2005_02
특허 번호
US06849732B2

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