Diisopropylamine → 1H-Pyrazole-4-carboxylic acid, 3-(4-chlorophenyl)-1-(((4-chlorophenyl)amino)carbonyl)-4,5-dihydro-4-methyl-, methyl ester

HRID 1607221Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1607221
C(NC(C)C)(C)C.C([Li])CCC.[Cl:13][C:14]1[CH:19]=[CH:18][C:17]([NH:20][C:21]([N:23]2[CH2:27][CH:26]([CH3:28])[C:25]([C:29]3[CH:34]=[CH:33][C:32]([Cl:35])=[CH:31][CH:30]=3)=[N:24]2)=[O:22])=[CH:16][CH:15]=1.[CH3:36][O:37][C:38](=O)[O:39]C>O1CCCC1.CCCCCC.C(O)(=O)C>[Cl:13][C:14]1[CH:15]=[CH:16][C:17]([NH:20][C:21]([N:23]2[CH2:27][C:26]([C:38]([O:37][CH3:36])=[O:39])([CH3:28])[C:25]([C:29]3[CH:30]=[CH:31][C:32]([Cl:35])=[CH:33][CH:34]=3)=[N:24]2)=[O:22])=[CH:18][CH:19]=1

Komponenten

8

Edukt 4

HCID 7912DiisopropylamineHCID 12021Dimethyl CarbonateHCID 13752557N,3-bis-(4-chlorophenyl)-4-methyl-4,5-dihydro-1H-pyrazole-1-carboxamideHCID 178418339Butyllithium

Produkt 1

HCID 1758551H-Pyrazole-4-carboxylic acid, 3-(4-chlorophenyl)-1-(((4-chlorophenyl)amino)carbonyl)-4,5-dihydro-4-methyl-, methyl ester

Reagenzien, Katalysatoren, Lösungsmittel 3

HCID 176Acetic AcidLösungsmittelHCID 8028TetrahydrofuranLösungsmittel2×HCID 8058HexaneLösungsmittel

Versuchsvorschrift

To 3.1 g of diisopropylamine dissolved in 15 ml of tetrahydrofuran and cooled in an ice salt bath was added 8.0 ml of a 2.7 molar solution of n-butyllithium in hexane. After stirring for 5 minutes a solution of 3.4 g of N,3-bis-(4-chlorophenyl)-4-methyl-4,5-dihydro-1H-pyrazole-1-carboxamide in 7 ml of tetrahydrofuran was added and the resulting solution stirred for 15 minutes. To this solution was added 1.5 ml of dimethylcarbonate and, after 15 minutes 1.5 ml of acetic acid was added. The reaction mixture was partitioned between diethyl ether and water and the organic layer was dried over anhydrous magnesium sulfate. The resulting solution was filtered and evaporated in vacuo to give 3.0 g of N,3-bis-(4-chlorophenyl)-4-carbomethoxy-4-methyl-4,5-dihydro-1H-pyrazole-1-carboxamide, mp 122° C. NMR and IR data were consistent with the structure.

Aufarbeitung

  1. temperaturecooled in an ice salt bath
  2. additionwas added
  3. customThe reaction mixture was partitioned between diethyl ether and water
  4. dry with materialthe organic layer was dried over anhydrous magnesium sulfate
  5. filtrationThe resulting solution was filtered
  6. customevaporated in vacuo

Quellen und Nachweise

ORD-Eintrag
ord-99ec301729b04b63837ba7e68eac57bb
Quelldatensatz
uspto-grants-1989_09
Patentnummer
US04863947

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