2-Chloro-4-fluoro-5-[3-methyl-2,6-dioxo-4-(trifluoromethyl)-1,2,3,6-tetrahydropyrimidin-1-yl]benzenesulfonyl chloride → 3-(4-Chloro-2-fluoro-5-sulfanylphenyl)-1-methyl-6-(trifluoromethyl)-1,2,3,4-tetrahydropyrimidine-2,4-dione

Participants

Reaction Steps

1.65 g of 2-chloro-4-fluoro-5-[3-methyl-2,6-dioxo-4-(trifluoromethyl)-1,2,3,6-tetrahydropyrimidin-1-yl]benzenesulfonyl chloride was dissolved in 16 ml of acetic acid, to this was added 4.4 g of zinc, then, they were reacted while heating under reflux. After completion of the reaction, the reaction solution was cooled, then, this was poured into ice water, extracted with ethyl acetate, and filtrated. The filtrate was separated, then, the organic layer was washed with saturated saline, dried over anhydrous magnesium sulfate, and concentrated to obtain 1.35 g of 2-chloro-4-fluoro-5-[3-methyl-2,6-dioxo-4-(trifluoromethyl)-1,2,3,6-tetrahydropyrimidin-1-yl]phenyl mercaptan.

Provenance & Evidence