Carbon tetrabromide → HCID 22119875, compound

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Reaction Steps

Triphenylphosphine (0.354 g, 0.00138 mol) is added to a solution of carbon tetrabromide (0.223 g, 0.000676 mol) in methylene chloride. The resultant mixture is stirred at room temperature for 10 minutes and treated dropwise with a solution of 5-[3,6-dihydro-3-methyl-2,6-dioxo-4-(trifluoromethyl)-1(2H)-pyrimidinyl]-1,2-benzisothiazole-3-carboxaldehyde (0.200 g, 0.000563 mol) in methylene chloride. The resultant mixture is stirred 20 minutes and concentrated in vacuo. The resultant residue is purified by flash column chromatography using silica gel and 10:1 methylene chloride/ethyl acetate to give the title product as a white solid (0.240 g, 83.6%, mp 260-262° C.) which is identified by NMR and IR spectral analyses.

Provenance & Evidence