Diisopropylethylamine → Methyl 4-[(2-chloroquinoline-4-carbonyl)amino]-3,5-dimethyl-benzoate

HRID 239978

Reaktionsgleichung

Reaktionsgleichung von HRID 239978
[Cl:1][C:2]1[CH:11]=[C:10]([C:12]([OH:14])=O)[C:9]2[C:4](=[CH:5][CH:6]=[CH:7][CH:8]=2)[N:3]=1.[NH2:15][C:16]1[C:25]([CH3:26])=[CH:24][C:19]([C:20]([O:22][CH3:23])=[O:21])=[CH:18][C:17]=1[CH3:27].C(N(CC)C(C)C)(C)C.CCCP1(OP(CCC)(=O)OP(CCC)(=O)O1)=O>C(Cl)Cl.O>[Cl:1][C:2]1[CH:11]=[C:10]([C:12]([NH:15][C:16]2[C:17]([CH3:27])=[CH:18][C:19]([C:20]([O:22][CH3:23])=[O:21])=[CH:24][C:25]=2[CH3:26])=[O:14])[C:9]2[C:4](=[CH:5][CH:6]=[CH:7][CH:8]=2)[N:3]=1

Komponenten

7

Edukt 4

HCID 81531DiisopropylethylamineHCID 111923Propylphosphonic anhydrideHCID 2305822-Chloroquinoline-4-carboxylic acidHCID 11030398Benzoic acid, 4-amino-3,5-dimethyl-, methyl ester

Produkt 1

HCID 86707363Methyl 4-[(2-chloroquinoline-4-carbonyl)amino]-3,5-dimethyl-benzoateAusbeute 960,3 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 962WaterLösungsmittelHCID 6344DichloromethaneLösungsmittel

Reaktionsbedingungen

Temperatur
40 °C

Versuchsvorschrift

To a solution of 2-chloroquinoline-4-carboxylic acid (5.00 g, 0.0024 mol) in CH2Cl2 (50 mL) at 0° C. are added methyl 4-amino-3,5-dimethylbenzoate (3.88 g, 0.02167 mol, see preparation 12) and N,N-diisopropylethylamine (12.5 ml, 0.07225 mol). After stirring the reaction mixture for 10 minutes, 1-propanephosphonic acid cyclic anhydride (50% solution in ethyl acetate, 31.0 ml, 0.048 mol) is added via syringe and heated at 40° C. After 5 hours, the reaction mixture is diluted with water and extracted with dichloromethane. The organic layers are combined and dried over magnesium sulfate, filtered, and concentrated under reduced pressure. The resulting residue is purified by flash chromatography (silica gel) using a gradient of 0-40% ethyl acetate in hexanes. After purification the solid is triturated with 20% diethyl ether in pentane and dried to give the title compound as a white solid (8.50 g, 96%). Mass spectrum (m/z): 369.1 (M+1).

Aufarbeitung

  1. waitAfter 5 hours
  2. extractionextracted with dichloromethane
  3. dry with materialdried over magnesium sulfate
  4. filtrationfiltered
  5. concentrationconcentrated under reduced pressure
  6. customThe resulting residue is purified by flash chromatography (silica gel)
  7. customAfter purification the solid
  8. customis triturated with 20% diethyl ether in pentane
  9. customdried

Quellen und Nachweise

ORD-Eintrag
ord-543cff2aef534d55add2ec8d683941a5
Quelldatensatz
uspto-grants-2014_02
Patentnummer
US08642768B2

Verknüpfte Notizen

Wird geladen…