Hydrochloric Acid → HCID 15300824, compound

Participants

Reaction Steps

A solution of 1.3 g (0.0096 mols) of furo [3,4-b]pyridine-7(5H)-one in 50 ml of dry THF is cooled to -75° C. and 8 ml (0.0192 mols) of 2.5M LDA added dropwise over 5 minutes. The mixture is allowed to react for 1 hr at -750° C. and 2.1 g (0.0096 mol) of 2-methylsulfonyl-4,6-dimethoxypyrimidine in 30 ml of dry THF added dropwise over 10 minutes. The mixture is allowed to warm to RT, 1.6 ml of HCl added and the THF evaporated off. The residue is dissolved in 75 ml of CH2Cl2, washed with water (2×50 ml) and the organic phase concentrated to give a yellowish white gummy solid. This is chromatographed on a silica gel column using 50/50 hexane/ethyl acetate (500 ml), ethyl acetate (500 ml) and 80/20 acetone/methanol (1000 ml) (30 fractions). The crystalline residue (fractions 18-21) of the title product has m.p. of 167°-168° C.

Provenance & Evidence