StartseiteMCPWorkbenchSkills
StartseiteWorkbenchBenachrichtigungenMein Bereich
llms.txt · MCP-AnleitungDatenschutz · Nutzungsbedingungen · Supportv1.8.0
  1. Startseite
  2. /Reaktion

Triethylamine → 1-(2,3-Dihydrobenzo[1,4]dioxine-2-carbonyl)-4-oxopiperidine-3-carboxylic acid methyl ester

HRID 453783
Notizen
Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 453783
[O:1]1[C:6]2[CH:7]=[CH:8][CH:9]=[CH:10][C:5]=2[O:4][CH2:3][CH:2]1[C:11](Cl)=[O:12].[CH3:14][O:15][C:16]([CH:18]1[C:23](=[O:24])[CH2:22][CH2:21][NH:20][CH2:19]1)=[O:17].C(N(CC)CC)C.[OH-].[Na+]>CN(C=O)C.O>[CH3:14][O:15][C:16]([CH:18]1[C:23](=[O:24])[CH2:22][CH2:21][N:20]([C:11]([CH:2]2[O:1][C:6]3[CH:7]=[CH:8][CH:9]=[CH:10][C:5]=3[O:4][CH2:3]2)=[O:12])[CH2:19]1)=[O:17]
KomponentenVersuchsvorschriftAufarbeitungQuellen und NachweiseNotizen zur Reaktion

Komponenten

7

Edukt 4

HCID 8471TriethylamineHCID 14798Sodium HydroxideHCID 2724029Methyl 4-oxopiperidine-3-carboxylateHCID 27354472,3-Dihydro-1,4-benzodioxin-2-carbonyl chloride

Produkt 1

HCID 667273031-(2,3-Dihydrobenzo[1,4]dioxine-2-carbonyl)-4-oxopiperidine-3-carboxylic acid methyl ester

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 962
Water
Lösungsmittel
HCID 6228DimethylformamideLösungsmittel

Versuchsvorschrift

To a mixture of 2,3-dihydrobenzo[1,4]dioxine-2-carbonyl chloride (2.0 g, 10.0 mmol) and 4-oxopiperidine-3-carboxylic acid methyl ester (2.14 g, 11.0 mmol) in DMF (5 ml) was added triethylamine (1.54 ml). The reaction mixture was stirred at RT for 5 h. The reaction mixture was taken up in water, made alkaline with aq NaOH and extracted with DCM to give 1-(2,3-dihydrobenzo[1,4]dioxine-2-carbonyl)-4-oxopiperidine-3-carboxylic acid methyl ester. A mixture of this product (0.2 g, 0.62 mmol), K2CO3 (0.17 g, 1.23 mmol) and methyl iodide (0.08 ml, 1.25 mmol) in acetone (20 ml) was irradiated in the microwave reactor at 56° C. for 90 min. Water was added and the reaction mixture extracted with EtOAc (3×5 ml). The combined organic phases were dried over Na2SO4, filtered and the filtrate was evaporated to give 1-(2,3-dihydrobenzo[1,4]dioxine-2-carbonyl)-3-methyl-4-oxopiperidine-3-carboxylic acid methyl ester, which was finally reduced with LiAlH4 in THF to afford the title compound.

Aufarbeitung

  1. extractionextracted with DCM

Quellen und Nachweise

ORD-Eintrag
ord-cda3852952fe48a89068598f8ac20820
Quelldatensatz
uspto-grants-2013_07
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US08492549B2

Notizen zur Reaktion

Wird geladen…

Auf dieser SeiteKomponentenVersuchsvorschriftAufarbeitungQuellen und NachweiseNotizen zur Reaktion