Potassium Carbonate → 3-(4-Aminopyrido[3,2-d]pyrimidin-6-yl)benzoic acid

Participants

Reaction Conditions

Reaction Steps

6-chloropyrido[3,2-d]pyrimidin-4-amine 3-A (500 mg, 2.8 mmol) in acetonitrile (5 mL) was treated with 3-borono-benzoic acid (CAS 269404-73-6) (560 mg, 3 mL), PDCL2(DPPF) (202 mg, 0.28 mmol) and 1 M POTASSIUM CARBONATE solution (8 mL). The reaction vial was purged with nitrogen, and heated to 80° C. for 1 hour. LCMS showed 100% conversion to desired product. Yellow ppt. was filtered and LCMS indicated it is pure product 3-(4-aminopyrido[3,2-d]pyrimidin-6-yl)benzoic acid 14. The filtrate was concentrate and purified with reverse phase C-18 column to provide more product. LC/MS (ESI+): m/z 267 (M+H).

Provenance & Evidence