Acetic Acid → 2-Chloro-8-[2-(2,2-dimethylmorpholin-4-yl)ethyl]-9-methyl-6-morpholin-4-yl-9H-purine

Participants

Reaction Steps

To a solution of (2-chloro-9-methyl-6-morpholin-4-yl-9H-purin-8-yl)acetaldehyde (116 mg, 0.39 mmol) in DCE (10 mL) was added 2,2-dimethylmorpholine (68 mg, 0.59 mmol), trimethyl orthoformate (0.22 mL, 1.96 mmol) and acetic acid (0.02 mL, 0.39 mmol). The reaction mixture was stirred at room temperature for 3 h, sodium triacetoxyborohydride (125 mg, 0.59 mmol) was added and the resulting mixture stirred for a further 18 h. The reaction mixture was loaded onto an Isolute® SCX-2 cartridge, he cartridge was washed with MeOH then the desired product eluted with 2 M NH3 in MeOH. The resulting residue was purified by column chromatography (Si—PCC, 0-10% MeOH in EtOAc) to give the title compound as a pale yellow solid (100 mg, 65%). LCMS (Method H): RT=2.51 min, [M+H]+ 395.4

Provenance & Evidence