2-Fluorobenzoyl chloride → N-[4-(5-chloro-2-methylbenzoxazol-6-yl)phenyl](2-fluorophenyl)carboxamide

HRID 407106

Reaktionsgleichung

Reaktionsgleichung von HRID 407106
[Cl:1][C:2]1[C:3]([C:12]2[CH:17]=[CH:16][C:15]([NH2:18])=[CH:14][CH:13]=2)=[CH:4][C:5]2[O:9][C:8]([CH3:10])=[N:7][C:6]=2[CH:11]=1.[F:19][C:20]1[CH:28]=[CH:27][CH:26]=[CH:25][C:21]=1[C:22](Cl)=[O:23].CCN(C(C)C)C(C)C.C([O-])(O)=O.[Na+].C(Cl)Cl>CN(C1C=CN=CC=1)C.C(Cl)Cl>[Cl:1][C:2]1[C:3]([C:12]2[CH:17]=[CH:16][C:15]([NH:18][C:22]([C:21]3[CH:25]=[CH:26][CH:27]=[CH:28][C:20]=3[F:19])=[O:23])=[CH:14][CH:13]=2)=[CH:4][C:5]2[O:9][C:8]([CH3:10])=[N:7][C:6]=2[CH:11]=1

Komponenten

7

Edukt 4

HCID 98082-Fluorobenzoyl chlorideHCID 81531DiisopropylethylamineHCID 23716255Sodium bicarbonate methylene chlorideHCID 674672954-(5-Chloro-2-methylbenzoxazol-6-yl)phenylamine

Produkt 1

HCID 54596675N-[4-(5-chloro-2-methylbenzoxazol-6-yl)phenyl](2-fluorophenyl)carboxamideAusbeute 57,5 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 142844-(Dimethylamino)pyridineKatalysatorHCID 6344DichloromethaneLösungsmittel

Versuchsvorschrift

To a solution of 4-(5-chloro-2-methylbenzoxazol-6-yl)phenylamine (56) (23 mg, 0.089 mmol) and 2 mg DMAP in 2 ml DCM was added 2-fluorobenzoyl chloride (21 μl, 0.18 mmol) followed by addition of DIEA (78 μl). The resulting brown solution was stirred at r.t. for 3 h. The reaction mixture was worked up with aq. NaHCO3/DCM. DCM phase was washed with brine, concentrated to dryness. The residue was dissolved in 2 ml THF/MeOH/H2O (5:4:1) and stirred with 1N NaOH (200 μl) at r.t. for 2 h before worked up with EA/aq. NaHCO3. Silica gel flash chromatography furnished 19.5 mg 57 as off-white solid. (yield: 57.5%).

Aufarbeitung

  1. washDCM phase was washed with brine
  2. concentrationconcentrated to dryness
  3. dissolutionThe residue was dissolved in 2 ml THF/MeOH/H2O (5:4:1)
  4. stirringstirred with 1N NaOH (200 μl) at r.t. for 2 h

Quellen und Nachweise

ORD-Eintrag
ord-9002de1b4d55484fb0725d693d7a0c47
Quelldatensatz
uspto-grants-2014_06
Patentnummer
US08754219B2

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