METHOD FOR PRODUCING BIS(2,2,3,3,4,4,5,5-OCTAFLUOROPENTYLOXY)METHANE Russian patent published in 2021 - IPC C07C41/60 C07C43/313 

FIELD: chemistry.

SUBSTANCE: present invention relates to a method for producing bis(2,2,3,3,4,4,5,5-octafluoropentyloxy)methane, which can be used as a heat carrier, a solvent for conducting reactions, a component of chemical compositions for the formation of electrolytes of chemical current sources and lubricants, as well as an alkylating reagent. The method consists in the fact that 2,2,3,3,4,4,5,5-octafluoropentanol-1 is first treated with a paraformaldehyde at a molar ratio (1,8-2) : 1 in the presence of toluene sulfonic acid and o-xylene or p-xylene, followed by fractionation of the mixture at atmospheric pressure and with the distillation of bis(2,2,3,3,4,4,5,5-octafluoropentyloxy)methane at reduced pressure.

EFFECT: proposed invention makes it possible to obtain the target product in a simple and effective way using minimal amounts of commercially available reagents.

1 cl, 3 ex