An efficient one‐pot method for synthesis of an array of 3,4‐dihydroquinazolin‐4‐ones from anthranilicacid, triethyl orthoformate, and anilines using oxalic acid as a catalyst was described. The present protocol offers improvements for the synthesis of 3,4‐dihydroquinazolin‐4‐ones with regard to short reaction time, high yields of products, and simplicity in operation.
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Sangshetti et al. (2008) studied this question.
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