Réaction #69986

Équation de réaction

4-(5-(piperazin-1-yl)pyridin-2-yl)-3,4-dihydro-2H-quinoxaline-1-carboxylic acid tert-butyl ester

dichloromethane

ethylsulphonyl chloride

→

4-[5-(4-(ethanesulphonyl)piperazin-1-yl)pyridin-2-yl]-3,4-dihydro-2H-quinoxaline-1-carboxylic acid tert-butyl ester

Solvants

triethylamine

Conditions de réaction

Traitement

1. 1
   Lavagewashed twice with water and once with a saturated sodium chloride solution
2. 2
   Autreevaporated under reduced pressure

Mode opératoire

0.8 g of 4-(5-(piperazin-1-yl)pyridin-2-yl)-3,4-dihydro-2H-quinoxaline-1-carboxylic acid tert-butyl ester is placed in a 25 ml round-bottomed flask. ml of dichloromethane are added, followed by 0.37 ml of triethylamine and finally 0.23 ml of ethylsulphonyl chloride. The reaction mixture is stirred at ambient temperature for 3 h, then washed twice with water and once with a saturated sodium chloride solution and then evaporated under reduced pressure. 0.98 g of 4-[5-(4-(ethanesulphonyl)piperazin-1-yl)pyridin-2-yl]-3,4-dihydro-2H-quinoxaline-1-carboxylic acid tert-butyl ester is obtained.

Source