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Herein, we report an efficient and straightforward multicomponent synthesis of phosphorylated dihydropyrimidinone derivatives, via the p-toluenesulfonic acid promoted Biginelli-type reaction of -ketophosphonates, aldehydes and urea. This method offers significant advantages over prior reports, such as efficiency, high yields and mild reaction conditions. Furthermore it is a green protocol avoiding hazardous metal-based catalysts.

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β-Ketophosphonates as substrates in the Biginelli multicomponent reaction: an efficient and straightforward synthesis of phosphorylated dihydropyrimidinones