Réaction #77960

Équation de réaction

tert-butyl nitrite

dimethyl disulfide

4-bromo-3-methyl-2-methylthioaniline

dimethyl disulfide

→

2-methyl-3,4-dimethylthiobromobenzene

Conditions de réaction

Traitement

1. 1
   FiltrationFor work-up, the solid is filtered off with suction
2. 2
   workup.ADDITIONthe filtrate is diluted with methylene chloride
3. 3
   Extractionextracted with dilute hydrochloric acid
4. 4
   LavageThe organic phase is washed with saturated aqueous NaHCO3 solution
5. 5
   Séchagedried over sodium sulfate
6. 6
   Filtrationfiltered off
7. 7
   Concentrationconcentrated
8. 8
   AutreExcess dimethyl disulfide is removed under oil pump vacuum

Mode opératoire

14.8 g (129 mmol) of tert-butyl nitrite and 20 g of copper powder are initially charged in 50 ml of dimethyl disulfide, and a solution of 20 g (86 mol) of 4-bromo-3-methyl-2-methylthioaniline in 100 ml of dimethyl disulfide is added dropwise at from 50 to 55° C. The mixture is subsequently stirred at 50° C. for 4 hours. For work-up, the solid is filtered off with suction and the filtrate is diluted with methylene chloride and extracted with dilute hydrochloric acid. The organic phase is washed with saturated aqueous NaHCO3 solution, dried over sodium sulfate, filtered off and concentrated. Excess dimethyl disulfide is removed under oil pump vacuum.

Source