Dimethylformamide → 2-(4-Chlorophenoxy)benzeneacetyl chloride

HRID 1970107Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1970107
[Cl:1][C:2]1[CH:18]=[CH:17][C:5]([O:6][C:7]2[CH:12]=[CH:11][CH:10]=[CH:9][C:8]=2[CH2:13][C:14](O)=[O:15])=[CH:4][CH:3]=1.CN(C)C=O.O=S(Cl)[Cl:26]>C1(C)C=CC=CC=1>[Cl:1][C:2]1[CH:18]=[CH:17][C:5]([O:6][C:7]2[CH:12]=[CH:11][CH:10]=[CH:9][C:8]=2[CH2:13][C:14]([Cl:26])=[O:15])=[CH:4][CH:3]=1

Komponenten

5

Edukt 3

HCID 6228DimethylformamideHCID 24386Thionyl ChlorideHCID 122458712-(2-(4-Chlorophenoxy)phenyl)acetic acid

Produkt 1

HCID 231486612-(4-Chlorophenoxy)benzeneacetyl chloride

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 1140TolueneLösungsmittel2×

Versuchsvorschrift

[2-(4-chloro-phenoxy)-phenyl]-acetic acid (IX) (47.3 grams; 180 mmol) was suspended in toluene (140 ml) at 48° C. To this suspension dimethyl-formamide (4.0 ml) and SOCl2 (19.8 ml; 271 mmol; 1.5 eq) in toluene (18 ml) were added. After 10 min the reaction mixture was concentrated under vacuo and stripped twice with toluene, to yield a brownish oil of [2-(4-chloro-phenoxy)-phenyl]-acetyl chloride. The oil was suspended in toluene (75 ml). To the suspension was added at 5° C. a solution of sarcosine methylester (30.3 grams 217 mmol) and triethylamine (57 ml) in a mixture of dimethyl-formamide (236 ml) and toluene (47 ml). The brownish suspension was stirred for 2 hours at room temperature. To the reaction mixture water (750 ml) was added and the mixture was extracted twice with ethyl acetate (500 ml). The organic phase was washed with saturated brine (700 ml) and dried on magnesium sulphate. The solvent was removed in vacuum to yield methyl-N-[2-(4-chloro-2-phenoxyphenyl)-1-oxethyl]-N-methylglycinate (X) (61.3 grams, 202 mmol) as a brownish oil.

Aufarbeitung

  1. concentrationAfter 10 min the reaction mixture was concentrated under vacuo

Quellen und Nachweise

ORD-Eintrag
ord-d336932884524a45837b8ec9d4ba540c
Quelldatensatz
uspto-grants-2013_04
Patentnummer
US08426610B2

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