1-Ethyl-3-(3'-dimethylaminopropyl)carbodiimide → 6-Chloro-N-(2-cyclopropylethyl)pyridazine-3-carboxamide

HRID 552144

Reaktionsgleichung

Reaktionsgleichung von HRID 552144
[Cl:1][C:2]1[N:7]=[N:6][C:5]([C:8]([OH:10])=O)=[CH:4][CH:3]=1.C(N(C(C)C)CC)(C)C.O.O[N:22]1[C:26]2[CH:27]=[CH:28][CH:29]=[CH:30]C=2N=N1.CN(C)CCCN=C=NCC.C1(CCN)CC1>ClCCl>[CH:28]1([CH2:27][CH2:26][NH:22][C:8]([C:5]2[N:6]=[N:7][C:2]([Cl:1])=[CH:3][CH:4]=2)=[O:10])[CH2:29][CH2:30]1

Komponenten

7

Edukt 5

HCID 159081-Ethyl-3-(3'-dimethylaminopropyl)carbodiimideHCID 81531DiisopropylethylamineHCID 27960291-Hydroxybenzotriazole hydrateHCID 64157626-chloropyridazine-3-carboxylic AcidHCID 10240761Cyclopropaneethanamine

Produkt 1

HCID 655615656-Chloro-N-(2-cyclopropylethyl)pyridazine-3-carboxamideAusbeute 55,1 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6344DichloromethaneLösungsmittel2×

Versuchsvorschrift

To a solution of 6-chloropyridazine-3-carboxylic acid (15.8 mmol) in dichloromethane (95 mL) was added diisopropylethylamine (46.7 mmol), 1-hydroxybenzotriazole monohydrate (23.7 mmol) and 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide (23.7 mmol) under nitrogen atmosphere at ambient temperature. The resulting mixture was stirred for 15 minutes and 2-cyclopropylethylamine (20.2 mmol) was added. After stirring for 36 hours at ambient temperature, the reaction mixture was diluted with dichloromethane (100 mL), then washed with water and dried over anhydrous Na2SO4. The solvent was removed in vacuo. Purification via column chromatography (30% ethyl acetate in hexanes) afforded the title compound (8.70 mmol). Yield 55%.

Aufarbeitung

  1. stirringAfter stirring for 36 hours at ambient temperature
  2. washwashed with water
  3. dry with materialdried over anhydrous Na2SO4
  4. customThe solvent was removed in vacuo
  5. customPurification via column chromatography (30% ethyl acetate in hexanes)

Quellen und Nachweise

ORD-Eintrag
ord-62c5194e7110425d9987a6e1e8cd4d55
Quelldatensatz
uspto-grants-2011_05
Patentnummer
US07951805B2

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