Dimethylformamide → 2-Chloro-4-morpholinothieno[3,2-d]pyrimidine-6-carbaldehyde

Participants

Reaction Steps

To a suspension of 2-chloro-4-morpholin-4-yl-thieno[3,2-d]pyrimidine (1.75 g, 6.85 mmol) in dry tetrahydrofuran (40 mL) at −78° C. was added nBuLi (3.3 mL, 1.2 equivalents, 2.5 M solution in hexanes). After stirring for 1 hour, dry N,N-dimethylformamide (796 μL, 1.5 equivalents) was added. The reaction mixture was stirred for 1 hour at −78° C. and then warmed slowly to room temperature. After a further 2 hours at room temperature the reaction mixture was poured onto ice-water yielding a yellow precipitate. This was collected by filtration and air-dried to yield the title compound (1.50 g, 77%).

Provenance & Evidence