Diisopropyl Ether → N-(1,5-dimethylpyrazol-3-yl)-2,6 dimethyl benzamide

HRID 128724

Reaktionsgleichung

Reaktionsgleichung von HRID 128724
[NH2:1][C:2]1[CH:6]=[C:5]([CH3:7])[N:4]([CH3:8])[N:3]=1.[CH3:9][C:10]1[CH:18]=[CH:17][CH:16]=[C:15]([CH3:19])[C:11]=1[C:12](Cl)=[O:13].C([O-])(O)=O.[Na+].C(OC(C)C)(C)C>C(Cl)Cl.CCOC(C)=O>[CH3:8][N:4]1[C:5]([CH3:7])=[CH:6][C:2]([NH:1][C:12](=[O:13])[C:11]2[C:15]([CH3:19])=[CH:16][CH:17]=[CH:18][C:10]=2[CH3:9])=[N:3]1

Komponenten

7

Edukt 4

HCID 7914Diisopropyl EtherHCID 890962,6-Dimethylbenzoyl chlorideHCID 516892Sodium BicarbonateHCID 70177471,5-dimethyl-1H-pyrazol-3-amine

Produkt 1

HCID 11776550N-(1,5-dimethylpyrazol-3-yl)-2,6 dimethyl benzamideAusbeute 38,2 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 6344DichloromethaneLösungsmittel2×HCID 8857Ethyl AcetateLösungsmittel

Versuchsvorschrift

To a cooled (0°-5° C.) solution of 3-amino-1,5-dimethyl pyrazole (95%, 32.7 g, 0.28M) in anhydrous CH2Cl2 (200 ml) was added a CH2Cl2 (100 ml) solution of the 2,6 dimethyl benzoyl chloride (23.6 g, 0.14M). The reaction mixture was allowed to room temperature for 18 hours and then CH2Cl2 was concentrated to give an oily mixture which was diluted in AcOEt. This suspension was then treated with saturated NaHCO3. After usual work-up, the crude material was cristallized with diisopropyloxide to give 13 g of the desired amide (38% : yield based on the 2,6-dimethyl benzoyl chloride).

Aufarbeitung

  1. concentrationCH2Cl2 was concentrated
  2. customto give an oily mixture which

Quellen und Nachweise

ORD-Eintrag
ord-f98ffc91eb5e435fac5c17e51ecfdfc5
Quelldatensatz
uspto-grants-1995_11
Patentnummer
US05464860

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