Triethylamine → (2-{[3-(1,3-Dioxo-1,3-dihydro-isoindol-2-yl)-3-methyl-butyrylamino]-methyl}-pyridin-3-yloxy)-acetic acid ethyl ester

HRID 1294603Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1294603
Cl.Cl.[NH2:3][CH2:4][C:5]1[C:10]([O:11][CH2:12][C:13]([O:15][CH2:16][CH3:17])=[O:14])=[CH:9][CH:8]=[CH:7][N:6]=1.C(N(CC)CC)C.[CH3:25][C:26]([CH3:42])([N:31]1[C:39](=[O:40])[C:38]2[C:33](=[CH:34][CH:35]=[CH:36][CH:37]=2)[C:32]1=[O:41])[CH2:27][C:28](O)=[O:29]>C(Cl)Cl>[CH2:16]([O:15][C:13](=[O:14])[CH2:12][O:11][C:10]1[C:5]([CH2:4][NH:3][C:28](=[O:29])[CH2:27][C:26]([N:31]2[C:39](=[O:40])[C:38]3[C:33](=[CH:34][CH:35]=[CH:36][CH:37]=3)[C:32]2=[O:41])([CH3:42])[CH3:25])=[N:6][CH:7]=[CH:8][CH:9]=1)[CH3:17]

Komponenten

5

Edukt 3

HCID 8471TriethylamineHCID 22038564beta,beta-Dimethyl-1,3dioxo-2-isoindolinepropionic acidHCID 220385702-Aminomethyl-3-(ethoxycarbonylmethoxy)pyridine dihydrochloride

Produkt 1

HCID 69158493(2-{[3-(1,3-Dioxo-1,3-dihydro-isoindol-2-yl)-3-methyl-butyrylamino]-methyl}-pyridin-3-yloxy)-acetic acid ethyl esterAusbeute 62,4 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6344DichloromethaneLösungsmittel

Versuchsvorschrift

To a solution of 2-aminomethyl-3-(ethoxycarbonylmethoxy)pyridine dihydrochloride (610 mg, 2.155 mmol), triethylamine (732 μl, 5.258 mmol), N,N-dicyclohexylcarbodiimide (596 mg, 2.892 mmol) and 4-(N,N-diemethylamino)-pyridine (10 mg) in 6 ml of dry methylene chloride is added β,β-dimethyl-1,3-dioxo-2-isoindolinepropionic acid (650 mg, 2.629 mmol) at ambient temperature. The mixture is stirred for 24 hours. The precipitate of dicyclohexyl urea is filtered off. The filtrate is evaporated and the residue is purified via flash chromatography on silica gel using a methylene chloride/methylene chloride-ethanolic ammonia gradient (100 to 97:3) to give 591 mg of (2-{[3-(1,3-dioxo-1,3-dihydro-isoindol-2-yl)-3-methyl-butyrylamino]-methyl}-pyridin-3-yloxy)-acetic acid ethyl ester (46%).

Aufarbeitung

  1. filtrationThe precipitate of dicyclohexyl urea is filtered off
  2. customThe filtrate is evaporated
  3. customthe residue is purified via flash chromatography on silica gel using a methylene chloride/methylene chloride-ethanolic ammonia gradient (100 to 97:3)

Quellen und Nachweise

ORD-Eintrag
ord-bd5853c213f4404b852cfa461ffc0e34
Quelldatensatz
uspto-grants-2007_07
Patentnummer
US07241772B2

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