Dimethyl Sulfoxide → 2-[2-(4-Fluorophenyl)-2-oxoethyl]-cis-4,5-diphenyl-4,5-dihydro-imidazole-1-carboxylic Acid, Tert-Butyl Ester

HRID 2053588Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 2053588
C(Cl)(=O)C(Cl)=O.CS(C)=O.[F:11][C:12]1[CH:17]=[CH:16][C:15]([CH:18]([OH:44])[CH2:19][C:20]2[N:21]([C:37]([O:39][C:40]([CH3:43])([CH3:42])[CH3:41])=[O:38])[C@H:22]([C:31]3[CH:36]=[CH:35][CH:34]=[CH:33][CH:32]=3)[C@H:23]([C:25]3[CH:30]=[CH:29][CH:28]=[CH:27][CH:26]=3)[N:24]=2)=[CH:14][CH:13]=1.C(N(CC)CC)C>ClCCl>[F:11][C:12]1[CH:17]=[CH:16][C:15]([C:18](=[O:44])[CH2:19][C:20]2[N:21]([C:37]([O:39][C:40]([CH3:42])([CH3:41])[CH3:43])=[O:38])[C@H:22]([C:31]3[CH:32]=[CH:33][CH:34]=[CH:35][CH:36]=3)[C@H:23]([C:25]3[CH:30]=[CH:29][CH:28]=[CH:27][CH:26]=3)[N:24]=2)=[CH:14][CH:13]=1

Komponenten

6

Edukt 4

HCID 679Dimethyl SulfoxideHCID 8471TriethylamineHCID 65578Oxalyl chlorideHCID 86596336HCID 86596336, Verbindung

Produkt 1

HCID 865963372-[2-(4-Fluorophenyl)-2-oxoethyl]-cis-4,5-diphenyl-4,5-dihydro-imidazole-1-carboxylic Acid, Tert-Butyl EsterAusbeute 89,7 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6344DichloromethaneLösungsmittel2×

Versuchsvorschrift

To a cold (−70° C.) solution of oxalyl chloride (0.27 mL, 3.06 mmol) in dichloromethane (15 mL) is added DMSO (0.32 mL, 6.11 mmol) followed by the alcohol 256 (1.28 g, 2.48 mmol) in dichloromethane (5 mL). The mixture is stirred for at −70° C. solution 15 min., and triethylamine (1.03 mL, 13.9 mmol) is added and the mixture is allowed to come to RT and is stirred for 4 h. The reaction mixture is washed with water, brine, then dried (MgSO4), and filtered. The filtrate is rotary evaporated, and the residue is recrystallized from Et2O to give 1.02 g of the product 257. 1H NMR (CDCl3) δ 10.60 (s, 1H), 8.10-7.95 (m, 2H), 7.10-6.90 (m, 12H), 6.90-6.70 (m, 2H), 5.40 (s, 2H), 1.25 (s, 9H); MS: m/z 459 (M++1).

Aufarbeitung

  1. additionis added
  2. customto come to RT
  3. washThe reaction mixture is washed with water, brine
  4. dry with materialdried (MgSO4)
  5. filtrationfiltered
  6. customthe residue is recrystallized from Et2O

Quellen und Nachweise

ORD-Eintrag
ord-56b4af73d0414ff9ac7615c7c88199b9
Quelldatensatz
uspto-grants-2008_02
Patentnummer
US07326792B2

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