Reaktion #46187

Reaktionsgleichung

1-(4-methoxy-phenyl)-cyclopropanecarboxylic acid methyl ester

MOMCl

→

1-(3-chloromethyl-4-methoxy-phenyl)-cyclopropanecarboxylic acid methyl ester

Ausbeute 102.2%

Lösungsmittel

CS2

Reaktionsbedingungen

Aufarbeitung

1. 1
   ExtraktionThe mixture was extracted with CH2Cl2 (150 mL×3)
2. 2
   SonstigeThe combined organic extracts were evaporated under vacuum

Vorschrift

To a solution of 1-(4-methoxy-phenyl)-cyclopropanecarboxylic acid methyl ester (30.0 g, 146 mmol) and MOMCl (29.1 g, 364 mmol) in CS2 (300 mL) was added TiCl4 (8.30 g, 43.5 mmol) at 5° C. The reaction mixture was heated at 30° C. for 1 day and poured into ice-water. The mixture was extracted with CH2Cl2 (150 mL×3). The combined organic extracts were evaporated under vacuum to give crude 1-(3-chloromethyl-4-methoxy-phenyl)-cyclopropanecarboxylic acid methyl ester (38.0 g), which was used in the next step without further purification.

Quelle