Triethylamine → HCID 54199230, compound

Participants

Reaction Conditions

Reaction Steps

36.8 g or 2-[4-(6-chlorobenzthiazolyloxy)-phenoxy]-propionyl chloride (prepared by reacting 35 g of the free acid with 13.1 g of thionyl chloride in 150 cc of toluene for 8 hours at 80° C.) are added to 150 cc of toluene and a mixture of 12.1 g of triethylamine and 10.6 g of thioglycolic acid methyl ester in 50 cc of toluene is added at 25° to 30° C. The reaction mixture is stirred for a further 2 hours at 50° to 60° C. The mixture is cooled to 25° C. and washed three times with 150 cc of water each. The toluene phase is dried over sodium sulfate, filtered and evaporated to dryness. The residue has completely crystallized after 3 days, yielding 40.5 g (92.7% of theory) of 2-[4-(6-chloro-2-benzthiazolyloxy)-phenoxy]-propionyl-glycolic acid methyl ester. m.p. 104° to 106° C. ##STR13##

Provenance & Evidence