Potassium Hydroxide → HCID 86056604, compound

Participants

Reaction Conditions

Reaction Steps

A mixture of 4.1 g (12.7 mmol) 2-(3,4-Dimethoxy-phenylamino)-5-methyl-thiazole-4-carboxylic acid ethyl ester and 7.6 ml 5M aq. KOH in 50 ml THF was heated to 50° C. for 16 h. After evaporation of the volatiles 100 ml water and 6 ml HOAc was added and the mixture was extracted 3× with 500 ml ethyl acetate. The combined organic layers were washed 3× with 200 ml water and concentrated at 40° C. under reduced pressure until precipitation started. After cooling to room temperature the crystals were filtered off, washed 3× with 10 ml ethyl acetate and dried to yield 2.16 g (44.5%) of the title compound. MS (m/e): 295.3 (MH+, 100%)

Provenance & Evidence