Acetic Anhydride → HCID 59655395, Verbindung

HRID 18840

Reaktionsgleichung

Reaktionsgleichung von HRID 18840
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

Komponenten

6

Edukt 3

HCID 7918Acetic Anhydride2×HCID 8471TriethylamineHCID 685688872-[(4-Fluorobenzyl)thio]-cis-4,5-diphenyl-4,5-dihydro-1H-imidazole Hydrochloride

Produkt 1

HCID 59655395HCID 59655395, VerbindungAusbeute 73,2 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 142844-(Dimethylamino)pyridineKatalysatorHCID 6344DichloromethaneLösungsmittel2×

Versuchsvorschrift

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).

Aufarbeitung

  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)

Quellen und Nachweise

ORD-Eintrag
ord-48e132940c824556bf81be1425ad37bc
Quelldatensatz
uspto-grants-2010_06
Patentnummer
US07741493B2

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