Acetic Anhydride → (S,S)-1-{5-[4-(Benzothiazol-2-yloxy)-benzyl]-2,5-diaza-bicyclo[2.2.1]hept-2-yl}-ethanone

HRID 545594ノート

反応式

HRID 545594 の反応式
Cl.[C@H:2]12[CH2:8][C@H:5]([NH:6][CH2:7]1)[CH2:4][N:3]2[CH2:9][C:10]1[CH:25]=[CH:24][C:13]([O:14][C:15]2[S:16][C:17]3[CH:23]=[CH:22][CH:21]=[CH:20][C:18]=3[N:19]=2)=[CH:12][CH:11]=1.CCN(CC)CC.[C:33](OC(=O)C)(=[O:35])[CH3:34]>C(Cl)Cl>[S:16]1[C:17]2[CH:23]=[CH:22][CH:21]=[CH:20][C:18]=2[N:19]=[C:15]1[O:14][C:13]1[CH:12]=[CH:11][C:10]([CH2:9][N:3]2[CH2:4][C@@H:5]3[CH2:8][C@H:2]2[CH2:7][N:6]3[C:33](=[O:35])[CH3:34])=[CH:25][CH:24]=1

参加物

5

反応物 3

HCID 7918Acetic AnhydrideHCID 8471TriethylamineHCID 67207143(S,S)-2-[4-(2,5-diaza-bicyclo[2.2.1]hept-2-ylmethyl)-phenoxy]-benzothiazole hydrochloride

生成物 1

HCID 67206806(S,S)-1-{5-[4-(Benzothiazol-2-yloxy)-benzyl]-2,5-diaza-bicyclo[2.2.1]hept-2-yl}-ethanone

試薬・触媒・溶媒 1

HCID 6344Dichloromethane溶媒

実験手順

To a stirred solution of (S,S)-2-[4-(2,5-diaza-bicyclo[2.2.1]hept-2-ylmethyl)-phenoxy]-benzothiazole hydrochloride (109 mg, 0.27 mmol) and Et3N (150 μL, 1.1 mmol) in CH2Cl2 (4 mL) was added acetic anhydride (40 μL, 0.4 mmol), and the resulting solution was then stirred at rt for 18 h. The resulting white suspension was partitioned between CH2Cl2 (150 mL) and satd. aq. NaHCO3 (50 mL). The organic layer was separated, dried (Na2SO4), filtered and concentrated. Purification by silica gel flash chromatography (0% to 5% CH3OH in CH2Cl2) afforded the title compound as a viscous, colorless oil (93 mg, 92%). MS (ESI): mass calcd. for C21H21N3O2S, 379.14; m/z found, 380.2 [M+H]+. 1H NMR (500 MHz, CDCl3, mixture of rotamers): 7.73 (d, J=7.5 Hz, 1H), 7.66 (d, J=8.0 Hz, 1H), 7.44-7.36 (m, 3H), 7.33-7.24 (m, 3H), 4.78 (br m, 0.5H), 4.23 (m, 0.5H), 3.78-3.73 (br m, 2.5H), 3.56 (m, 1.5H), 3.32 (dd, J=9.3, 2.2 Hz, 0.5H), 3.27 (dd, J=11.4, 2.3 Hz, 0.5H), 3.01 (dd, J=9.1, 2.2 Hz, 0.5H), 2.84 (dd, J=9.7, 2.1 Hz, 0.5H), 2.77 (br d, J=9.9 Hz, 0.5H), 2.56 (dd, J=9.9, 1.2 Hz, 0.5H), 2.08 (s, 1.5H), 2.00 (s, 1.5H), 1.98 (br m, 0.5H), 1.91 (br m, 0.5H), 1.80 (br m, 0.5H), 1.66 (br m, 0.5H).

後処理

  1. customThe resulting white suspension was partitioned between CH2Cl2 (150 mL)
  2. customThe organic layer was separated
  3. dry with materialdried (Na2SO4)
  4. filtrationfiltered
  5. concentrationconcentrated
  6. customPurification by silica gel flash chromatography (0% to 5% CH3OH in CH2Cl2)

出典と根拠

ORDレコード
ord-8dcf27a0e1c044fbb67c3f9da15bfcf5
出典データセット
uspto-grants-2011_05
特許番号
US07935725B2

反応ノート

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