Reaction #605972

Reaction equation

sulfuric acid

sodium bromide

sodium bromate

methyl 7-(6-methoxypyridin-2-yl)-2-(methylsulfanyl)thieno[3,2-d]pyrimidine-6-carboxylate

→

methyl 7-(6-methoxypyridin-2-yl)-2-(methylsulfinyl)thieno[3,2-d]pyrimidine-6-carboxylate

Solvents

water

Conditions

Workup

1. 1
   Otherprepared by analogy to the method
2. 2
   Filtrationthe yellow suspension is filtered through a number 4 sintered glass
3. 3
   Filtrationfilter
4. 4
   OtherThe yellow solid is dried under vacuum so as

Procedure

24 mg of sodium bromide and 18 mg of sodium bromate are added, with stirring, to a suspension of 55 mg of methyl 7-(6-methoxypyridin-2-yl)-2-(methylsulfanyl)thieno[3,2-d]pyrimidine-6-carboxylate, prepared by analogy to the method described in example 5, (at 50%) in 2 ml of water, and then 6.5 μl of concentrated sulfuric acid are slowly added. The yellow suspension rapidly turns orange. After 2 h 30 minutes of stirring at ambient temperature, the yellow suspension is filtered through a number 4 sintered glass filter. The yellow solid is dried under vacuum so as to obtain 28 mg of methyl 7-(6-methoxypyridin-2-yl)-2-(methylsulfinyl)thieno[3,2-d]pyrimidine-6-carboxylate.

Source