Water → 2-Bromomethyl-benzoic acid 2,2,2-trichloro-ethyl ester

HRID 1628165

Reaktionsgleichung

Reaktionsgleichung von HRID 1628165
[Br:1][CH2:2][C:3]1[CH:11]=[CH:10][CH:9]=[CH:8][C:4]=1[C:5]([OH:7])=[O:6].[CH2:12](O)[C:13]([Cl:16])([Cl:15])[Cl:14].O>CN(C1C=CN=CC=1)C.C(Cl)Cl>[Cl:14][C:13]([Cl:16])([Cl:15])[CH2:12][O:6][C:5](=[O:7])[C:4]1[CH:8]=[CH:9][CH:10]=[CH:11][C:3]=1[CH2:2][Br:1]

Komponenten

6

Edukt 3

HCID 962WaterHCID 8259TrichloroethanolHCID 3460032-(Bromomethyl)benzoic acid

Produkt 1

HCID 668652492-Bromomethyl-benzoic acid 2,2,2-trichloro-ethyl esterAusbeute 50 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 142844-(Dimethylamino)pyridineKatalysatorHCID 6344DichloromethaneLösungsmittel

Reaktionsbedingungen

Temperatur
0 °C

Versuchsvorschrift

To a suspension of 2-(bromomethyl)benzoic acid (1.0 g, 4.65 mmol), β-trichloroethanol (0.54 mL, 5.58 mmol) and DMAP (0.057 g, 0.465 mmol) in DCM (20 mL) was added EDCxHCl (1.34 g, 6.98 mmol) at 0° C. The solution was stirred at 0° C. for 0.5 h and thereafter allowed to reach rt and stirred overnight. Water was added and the phases were separated through a phase separator. The organic portion was concentrated and the crude was submitted to flash chromatography using heptane and EtOAc (90/10) as eluent to yield the titled compound (0.80 g, 50%) as an oil; 1H NMR (400 MHz, CDCl3): δ 4.99 (s, 2H), 5.08 (s, 2H), 7.46 (m, 1H), 7.60 (m, 2H), 8.13 (d, 1H).

Aufarbeitung

  1. additionwas added EDCxHCl (1.34 g, 6.98 mmol) at 0° C
  2. customto reach rt
  3. stirringstirred overnight
  4. customthe phases were separated through a phase separator
  5. concentrationThe organic portion was concentrated

Quellen und Nachweise

ORD-Eintrag
ord-6de18aa7f0834c67bf78c4659ab6842a
Quelldatensatz
uspto-grants-2014_07
Patentnummer
US08785681B2

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