4-Nitrobenzenesulfonyl chloride → (S)-3-{(S)-2-[3-(3,4-dichloro-benzyloxy)-phenyl]-2,3-dihydro-benzo[1,4]dioxin-6-yl}-2-(4-nitro-benzenesulfonylamino)-propionic acid methyl ester

HRID 391828노트

반응식

HRID 391828 반응식
Cl.[CH3:2][O:3][C:4](=[O:34])[C@@H:5]([NH2:33])[CH2:6][C:7]1[CH:32]=[CH:31][C:10]2[O:11][C@@H:12]([C:15]3[CH:20]=[CH:19][CH:18]=[C:17]([O:21][CH2:22][C:23]4[CH:28]=[CH:27][C:26]([Cl:29])=[C:25]([Cl:30])[CH:24]=4)[CH:16]=3)[CH2:13][O:14][C:9]=2[CH:8]=1.C([O-])(O)=O.[Na+].[N+:40]([C:43]1[CH:48]=[CH:47][C:46]([S:49](Cl)(=[O:51])=[O:50])=[CH:45][CH:44]=1)([O-:42])=[O:41]>CCOC(C)=O>[CH3:2][O:3][C:4](=[O:34])[C@@H:5]([NH:33][S:49]([C:46]1[CH:45]=[CH:44][C:43]([N+:40]([O-:42])=[O:41])=[CH:48][CH:47]=1)(=[O:50])=[O:51])[CH2:6][C:7]1[CH:32]=[CH:31][C:10]2[O:11][C@@H:12]([C:15]3[CH:20]=[CH:19][CH:18]=[C:17]([O:21][CH2:22][C:23]4[CH:28]=[CH:27][C:26]([Cl:29])=[C:25]([Cl:30])[CH:24]=4)[CH:16]=3)[CH2:13][O:14][C:9]=2[CH:8]=1

참가 물질

5

반응물 3

HCID 74044-Nitrobenzenesulfonyl chlorideHCID 516892Sodium BicarbonateHCID 66719663(S)-2-Amino-3-{(S)-2-[3-(3,4-dichloro-benzyloxy)-phenyl]-2,3-dihydro benzo[1,4]dioxin-6-yl}-propionic acid methyl ester hydrochloride

생성물 1

HCID 58327266(S)-3-{(S)-2-[3-(3,4-dichloro-benzyloxy)-phenyl]-2,3-dihydro-benzo[1,4]dioxin-6-yl}-2-(4-nitro-benzenesulfonylamino)-propionic acid methyl ester수율 82.4%

시약·촉매·용매 1

HCID 8857Ethyl Acetate용매

반응 조건

온도
0 °C

실험 절차

(S)-2-Amino-3-{(S)-2-[3-(3,4-dichloro-benzyloxy)-phenyl]-2,3-dihydro benzo[1,4]dioxin-6-yl}-propionic acid methyl ester hydrochloride (0.35 g) was taken in 2 mL of EtOAc and cooled to 0° C., NaHCO3 solution (1 mL) and 4-nitrobenzensulfonyl chloride (178 mg) were added and stirred for 10 minutes. Reaction was stirred at room temperature for 4 hours. EtOAc layer was separated and washed with water and brine, and then dried (Na2SO4), filtered and evaporated. The residue was purified by silica gel column (10% EtOAc in hexanes to 50% EtOAc in hexanes) to get pure (S)-3-{(S)-2-[3-(3,4-dichloro-benzyloxy)-phenyl]-2,3-dihydro-benzo[1,4]dioxin-6-yl}-2-(4-nitro-benzenesulfonylamino)-propionic acid methyl ester (0.37 g). 1H NMR (400 MHz, acetone-d6): 8.33 (m, 2H), 7.89 (m, 2H), 7.73 (d, 1H), 7.62 (d, 1H), 7.37-7.53 (m, 3H), 7.04-7.21 (m, 3H), 6.64-6.72 (m, 3H), 5.22 (s, 2H), 5.09 (m, 1H), 4.35 (m, 1H), 4.21 (m, 1H), 3.97 (m, 1H), 3.61 (s, 3H), 3.03 (m, 1H), 2.76 (m, 1H).

후처리

  1. customReaction
  2. stirringwas stirred at room temperature for 4 hours
  3. customEtOAc layer was separated
  4. washwashed with water and brine
  5. dry with materialdried (Na2SO4)
  6. filtrationfiltered
  7. customevaporated
  8. customThe residue was purified by silica gel column (10% EtOAc in hexanes to 50% EtOAc in hexanes)

출처 및 근거

ORD 기록
ord-7aa8aa75af224273bd301a78dde3b1a1
출처 데이터셋
uspto-grants-2013_02
특허 번호
US08383644B2

반응 노트

불러오는 중…