2-Propanethiol → 1,2,3,4-Tetrahydro-3-methyl-5-[(1-methylethyl)thio]-1-(2-methylpropyl)-2,4-dioxo-thieno[2,3-d]pyrimidine-6-carboxaldehyde

Participants

Reaction Steps

To a solution of 5-chloro-1,2,3,4-tetrahydro-3-methyl-1-(2-methylpropyl)-2,4-dioxo-thieno[2,3-d]pyrinidine-6-carboxaldehyde (Example 50 step b; 2 g) in dimethylformamide (20 ml) was added sodium hydride (0.3 g of 60% dispersion) followed by the addition of 2-propanethiol (0.6 g). The mixture was stirred for 24 hours at ambient temperature then the reaction was diluted with water (100 ml) and extracted thrice with ethyl acetate (3×100 ml). The organic phase was washed with water (100 ml), then with brine (100 ml) and then dried, filtered and evaporated to leave the subtitle compound as a pale yellow solid (2.24 g).

Provenance & Evidence