Reacción #1583808

Ecuación de reacción

bromine

1-(5-chloro-2-thienyl)-2-(pyridin-4-yl)ethanone

→

2-Bromo-1-(5-chloro-2-thienyl)-2-(pyridin-4-yl)ethanone

Disolventes

acetic acid

Condiciones de reacción

Tratamiento posterior

1. 1
   FiltraciónThe resulting precipitate is filtered off
2. 2
   Lavadowashed with MTBE
3. 3
   Otrodried

Procedimiento

At room temperature, 26.9 g (167 mmol) of bromine are added dropwise to a solution of 40.0 g (167 mmol) of 1-(5-chloro-2-thienyl)-2-(pyridin-4-yl)ethanone in 200 ml of acetic acid, and the mixture is stirred for 90 min. The resulting precipitate is filtered off, washed with MTBE and dried. This gives 64.5 g (96%) of the desired product; log P (pH2.7): 2.18 with MS (ESI): 315.9 ([M+H]+).

Fuente