5-(2-(2-(Pentafluoroethoxy) tetrafluoroethoxy)-2,2-difluoroethoxy)-1-bromopentane → 5-Hexyloxy-2-[4-(5-(2-(2-(pentafluoroethoxy)tetrafluoroethoxy)-2,2-difluoroethoxy)pentyloxy)phenyl]pyrimidine

Participants

Reaction Steps

The title compound was prepared essentially as in Example 1 by combining 5-hexyloxy-2-(4-hydroxyphenyl)pyrimidine (2.26 g, 8.3 mmol) with 5-(2(2-(pentafluoroethoxy)tetrafluoroethoxy)-2,2-difluoroethoxy)-1-bromopentane (4.08 g, 8.3 mmol; prepared by combining 1,5-dibromopentane with 2-(2-(pentafluoroethoxy)tetrafluoroethoxy)-2,2-difluoroethanol). Product was isolated by addition of water (160 mL) to the resulting mixture, followed by filtration and recrystallization from ethanol. The recrystallized precipitate was dried at about 130° C., and the resulting product was further purified by Kugelrohr distillation (b.p. 190-205° C. at 0.3 torr; yield of 15.2 g).

Provenance & Evidence