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An efficient and original synthesis of various 2,4,7‐trisubstituted pyrido[3,2‐d]pyrimidines is reported. The first access to and the chemical interest of 2,4,7‐trichloropyrido[3,2‐d]pyrimidine is described. Double arylations and SNAr reactions occurred selectively at the C4 and C2 positions of 2,4,7‐trichloropyrido[3,2‐d]pyrimidine. The reactions at the C7 position were achieved under microwave irradiation...
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