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  • Title: Versatile solid-phase synthesis of trisubstituted 1H-pyrido[2,3-d]pyrimidin-4-ones and related heterocycles.
    Author: Schell P, Richards MP, Hanson K, Berk SC, Makara GM.
    Journal: J Comb Chem; 2005; 7(1):96-8. PubMed ID: 15638487.
    Abstract:
    A solid-phase synthesis of trisubstituted 1H-pyrido[2,3-d]pyrimidin-4-ones has been developed. The synthesis utilizes solid-phase bound N-2,6-dichloronicotinoyl-1H-benzotriazole-1-carboximidamides as key intermediates. Sequential substitution of benzotriazole and the two chlorines furnishes the title compounds with regioselectivity and high purity. Application of the method to various disubstituted analogues is also demonstrated.
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