Dabco → HCID 11716214, Verbindung

HRID 1983584Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1983584
[C:1]([O:5][C:6]1[CH:11]=[CH:10][C:9]([Cl:12])=[CH:8][CH:7]=1)(=[O:4])[CH:2]=[CH2:3].[N:13]1[CH:18]=[CH:17][CH:16]=[C:15]([CH:19]=[O:20])[CH:14]=1.C1N2CCN(CC2)C1>ClCCl>[OH:20][CH:19]([C:15]1[CH:14]=[N:13][CH:18]=[CH:17][CH:16]=1)[C:2](=[CH2:3])[C:1]([O:5][C:6]1[CH:11]=[CH:10][C:9]([Cl:12])=[CH:8][CH:7]=1)=[O:4]

Komponenten

5

Edukt 3

HCID 9237DabcoHCID 103713-PyridinecarboxaldehydeHCID 2934614-Chlorophenyl acrylate

Produkt 1

HCID 11716214HCID 11716214, VerbindungAusbeute 18 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6344DichloromethaneLösungsmittel

Versuchsvorschrift

A mixture of 37 mg (0.20 mmol) of 4-chlorophenyl acrylate, 22 mg (0.22 mmol) of pyridine-3-carboxaldehyde, and 22 mg (0.20 mmol) of DABCO was thoroughly shaken on a Vortex mixer. After 1 hr at room temperature, the mixture was diluted with dichloromethane. The DCM solution was washed with dilute aqueous acetic acid, and the DCM removed by rotoevaporation. The residue was purified by preparative HPLC to give 10 mg (0.035 mmol, 18% yield) of the desired Baylis-Hillman adduct, 4-chlorophenyl β-hydroxy-α-methylene-3-pyridinepropanoate. 1H NMR (CDCl3): δ 5.70 (1H), 6.14 (1H), 6.64 (1H), 7.76 (d of t, 1H), 8.55 (d of d, 1H), and 8.64 ppm (d, 1H). MS m/z: 290.0 (M+H).

Aufarbeitung

  1. washThe DCM solution was washed with dilute aqueous acetic acid
  2. customthe DCM removed by rotoevaporation
  3. customThe residue was purified by preparative HPLC

Quellen und Nachweise

ORD-Eintrag
ord-4d3c7e8fe3934b86938f164ec8048609
Quelldatensatz
uspto-grants-2009_06
Patentnummer
US07541472B2

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