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Acetic Anhydride → 1-[2-(4-Fluorobenzylthio)-cis-4,5-diphenyl-4,5-dihydro-imidazol-1-yl]ethanone

HRID 18840
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HRID 18840 반응식
Cl.[F:2][C:3]1[CH:27]=[CH:26][C:6]([CH2:7][S:8][C:9]2[NH:10][C@H:11]([C:20]3[CH:25]=[CH:24][CH:23]=[CH:22][CH:21]=3)[C@H:12]([C:14]3[CH:19]=[CH:18][CH:17]=[CH:16][CH:15]=3)[N:13]=2)=[CH:5][CH:4]=1.C(N(CC)CC)C.[C:35](OC(=O)C)(=[O:37])[CH3:36]>CN(C)C1C=CN=CC=1.ClCCl>[F:2][C:3]1[CH:27]=[CH:26][C:6]([CH2:7][S:8][C:9]2[N:13]([C:35](=[O:37])[CH3:36])[C@H:12]([C:14]3[CH:19]=[CH:18][CH:17]=[CH:16][CH:15]=3)[C@H:11]([C:20]3[CH:21]=[CH:22][CH:23]=[CH:24][CH:25]=3)[N:10]=2)=[CH:5][CH:4]=1
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참가 물질

6

반응물 3

HCID 7918Acetic Anhydride2회HCID 8471TriethylamineHCID 685688872-[(4-Fluorobenzyl)thio]-cis-4,5-diphenyl-4,5-dihydro-1H-imidazole Hydrochloride

생성물 1

HCID 596553951-[2-(4-Fluorobenzylthio)-cis-4,5-diphenyl-4,5-dihydro-imidazol-1-yl]ethanone수율 73.2%

시약·촉매·용매 2

HCID 142844-(Dimethylamino)pyridine
촉매
HCID 6344Dichloromethane용매2회

실험 절차

To a solution of 2-[(4-fluorobenzyl)thio]-cis-4,5-diphenyl-4,5-dihydro-1H-imidazole hydrochloride (197) (0.50 g, 1.25 mmol), triethylamine (0.384 mL, 2.75 mmol), 4-dimethylaminopyridine (20 mg) in dichloromethane (20 mL) is added acetic anhydride (0.130 mL, 1.38 mmol), and the mixture is stirred at rt for 3 h. Additional acetic anhydride (0.100 mL, 1.06 mmol) is added, and the mixture is stirred at rt overnight. The reaction mixture is diluted with dichloromethane and washed with water, brine, and the organic layer is dried (MgSO4), filtered, and evaporated. The residue is recrystallized from heptane:dichloromethane (95:5) to give 0.37 g of the product 549. 1H NMR (CDCl3) δ 7.60-7.40 (m, 2H), 7.10-6.90 (m, 8H), 6.90-6.75 (m, 2H), 6.75-6.65 (m, 2H), 5.65 (d, 1H), 5.43 (d, 1H), 4.33 (q, 2H), 1.91 (s, 3H). MS: m/z 405 (M++1).

후처리

  1. stirringthe mixture is stirred at rt overnight
  2. washwashed with water, brine
  3. dry with materialthe organic layer is dried (MgSO4)
  4. filtrationfiltered
  5. customevaporated
  6. customThe residue is recrystallized from heptane:dichloromethane (95:5)

출처 및 근거

ORD 기록
ord-48e132940c824556bf81be1425ad37bc
출처 데이터셋
uspto-grants-2010_06
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US07741493B2

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