1-Bromo-4-(2-methylpropoxy)benzene → 2-Chloro-5-(4-isobutoxy-benzoyl)-benzenesulfonamide

HRID 1515444노트

반응식

HRID 1515444 반응식
Br[C:2]1[CH:7]=[CH:6][C:5]([O:8][CH2:9][CH:10]([CH3:12])[CH3:11])=[CH:4][CH:3]=1.C([Li])CCC.[Cl:18][C:19]1[CH:30]=[CH:29][C:22]([C:23](N(OC)C)=[O:24])=[CH:21][C:20]=1[S:31](=[O:34])(=[O:33])[NH2:32]>O1CCCC1>[Cl:18][C:19]1[CH:30]=[CH:29][C:22]([C:23](=[O:24])[C:2]2[CH:7]=[CH:6][C:5]([O:8][CH2:9][CH:10]([CH3:12])[CH3:11])=[CH:4][CH:3]=2)=[CH:21][C:20]=1[S:31]([NH2:32])(=[O:34])=[O:33]

참가 물질

5

반응물 3

HCID 153241111-Bromo-4-(2-methylpropoxy)benzeneHCID 581073994-chloro-N-methoxy-N-methyl-3-sulfamoyl-benzamideHCID 178418339Butyllithium

생성물 1

HCID 442357412-Chloro-5-(4-isobutoxy-benzoyl)-benzenesulfonamide수율 37%

시약·촉매·용매 1

HCID 8028Tetrahydrofuran용매2회

반응 조건

온도
-78 °C

실험 절차

1-Bromo-4-isobutoxy-benzene (625 mg, 2.73 mmol) is dissolved in tetrahydrofuran (2 mL) and cooled to −78° C. The solution is treated with a solution of n-butyllithium (1.6 M in hexanes, 1.7 mL, 2.73 mmol) and stirred 30 minutes after which a solution of 4-chloro-N-methoxy-N-methyl-3-sulfamoyl-benzamide (250 mg, 0.91 mmol) in tetrahydrofuran (2 mL) is added. The reaction is allowed to stir for 18 hours while warming to ambient temperature. The reaction is quenched with a saturated solution of ammonium chloride and extracted with ethyl acetate. The organic phase is separated and concentrated in vacuo. The residue is purified by column chromatography (gradient of ethyl acetate in hexanes 10-50%) affording 120 mg (37% yield) of the title compound. 1H NMR (DMSO) δ 1.00 (d, 6H, J=6.56 Hz), 2.01-2.10 (m, 1H), 3.88 (d, 2H, J=6.57 Hz), 7.11 (d, 2H, J=8.85 Hz), 7.76 (d, 2H, J=8.85 Hz), 7.81-7.84 (m, 3H), 7.89 (dd, 1H, J=2.02, 8.08), 8.24 (d, 1H, J=2.02). MS (m/z): 366 (M−1). CHN Calc C, 55.51; H, 4.93; N, 3.81. Found C, 55.38; H, 4.74; N, 3.77.

후처리

  1. additionis added
  2. temperaturewhile warming to ambient temperature
  3. customThe reaction is quenched with a saturated solution of ammonium chloride
  4. extractionextracted with ethyl acetate
  5. customThe organic phase is separated
  6. concentrationconcentrated in vacuo
  7. customThe residue is purified by column chromatography (gradient of ethyl acetate in hexanes 10-50%)

출처 및 근거

ORD 기록
ord-d839b5b5ce6348b3a0f0c298e5484124
출처 데이터셋
uspto-grants-2012_07
특허 번호
US08222424B2

반응 노트

불러오는 중…