Porcheddu A, Giacomelli G, De Luca L, Ruda AM. A “Catch and Release” Strategy for the Parallel Synthesis of 2,4,5-Trisubstituted Pyrimidines.
ACTA ACUST UNITED AC 2003;
6:105-11. [PMID:
14714993 DOI:
10.1021/cc034024o]
[Citation(s) in RCA: 34] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A resin capture and release strategy for making a combinatorial array of 2,4,5-trisubstituted pyrimidines is demonstrated by capturing beta-ketoesters and beta-ketoamides on a solid-supported piperazine. Through a cyclocondensation reaction, the solid-supported enaminone is reacted with several guanidines under heating or microwave irradiation affording the corresponding pyrimidines in good yield and chemical purity directly on solution. After this final step, the support can be effectively recycled.
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