Methyl bromoacetate → Methyl alpha-benzyl-2-{{2-chloro-5-[3,6-dihydro-3-methyl-2,6-dioxo-4-(trifluoromethyl)-1(2H)-primidinyl]-4-fluorophenyl}imino}-4-oxo-3-thiazolidineacetate

Participants

Reaction Conditions

Reaction Steps

A solution of 2-chloro-5-[3,6-dihydro-3-methyl-2,6-dioxo-4-(trifluoromethyl)-1(2H)-pyrimidinyl]-4-fluorophenyl isothiocyanate (0.38 g, 1.0 mmol) and N,N-diisopropylethylamine (1.0 mL) in tetrahydrofuran is treated with L-phenylalanine, methyl ester, hydrochloride (0.18 g, 1.0 mmol), shaken at 40° C. for 1 hour, treated with methyl bromoacetate (0.46 g, 3.0 mmol), shaken at 40° C. for 16 hours, and concentrated in vacuo to obtain a residue. Column chromatography of the residue using silica gel and 0% to 10% diethyl ether in methylene chloride solutions gives the title product (0.37 g) which is identified by 1H and 13C NMR spectral analyses.

Provenance & Evidence