Allyl bromide → HCID 20061622, compound

Participants

Reaction Steps

10 g of ethyl 2,3-dihydro-2-oxo-4-trifluoromethyl-5-thiazolcarboxylate (CA Vol. 92 110 998P), 200 ml of toluene, 2.6 g of potassium in pastilles, 6 ml of allyl bromide and 2.8 g of tetrabutylammonium bromide were heated at 90° C. for 3 hours and the mixture was allowed to return to ambient temperature followed by stirring for 2 hours. The mixture was washed with a N sodium hydroxide solution, with a N hydrochloric acid solution, with water and with a saturated sodium chloride solution. Drying, filtering and concentrating were carried out and the residue was chromatographed on silica and eluted with a hexane-ethyl acetate mixture (9-1) to obtain 8.65 g of the expected product with a Rf=0.25.

Provenance & Evidence