2-Bromo-1,1,1-trifluoroethane → Bis(trifluoroethyl)dithio

Temperatur

70 °C

A mixture of 2,2,2-trifluoroethyl bromide (9.8 g), sodium sulphide nonahydrate (14.4 g), sulphur (1.9 g), hexadecyl tributyl phosphonium bromide (1.0 g) and water (18.0 g) was charged to a Carius tube under a nitrogen atmosphere and the tube sealed. The tube was heated to 70° C. for 8 hours, cooled and the contents subjected to steam distillation to give bis-(2,2,2-trifluoroethyl) disulphide as an oil in a yield of 67° C. The product was identified by GC-mass spectroscopy.

1. additionwas charged to a Carius tube under a nitrogen atmosphere
2. customthe tube sealed
3. temperaturecooled
4. distillationthe contents subjected to steam distillation

ORD-Eintrag

ord-70a8131d2c2242bda19952751b86f54d

Quelldatensatz

uspto-grants-1993_11

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US05258547