Sodium hydride → HCID 19700280, compound

Participants

Reaction Conditions

Reaction Steps

4.5 g (7.88 mmol) of 1,3,5-tris-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-benzene were dissolved in 40 ml of dry DMF, and 0.95 g (31.5 mmol) of sodium hydride was added while flushing with nitrogen. After dissolution of the hydride, 6.56 g (30 mmol) of 4-isopropylbenzenesulfonyl chloride were added at 0 to 5° C. Slight evolution of heat was observed. The mixture was stirred for 20 hours at 5° C., ethyl acetate was added and the mixture was washed with water, dried, filtered and evaporated down. 9.6 g of crude product were obtained, and said crude product was eluted over a silica gel column with a 1:1 mixture of methylene chloride/hexane. The third fraction obtained was freed from the solvent and gave 6.8 g of 1,3,5-tris-[2,2,2-trifluoro-1-(4-isopropylbenzenesulfonyloxy)-1-trifluoromethylethyl]-benzene. M.p. 105° C.

Provenance & Evidence