Palladium-Catalyzed Synthesis of Substituted Hydantoins—A New Carbonylation Reaction for the Synthesis of Amino Acid Derivatives
作者:Matthias Beller、Markus Eckert、Wahed A. Moradi、Helfried Neumann
DOI:10.1002/(sici)1521-3773(19990517)38:10<1454::aid-anie1454>3.0.co;2-d
日期:1999.5.17
One-step synthesis of substituted hydantoins can be achieved by the palladium-catalyzed "ureidocarbonylation" of aldehydes with urea derivatives and carbon monoxide [Eq. (1)]. This surprisingly selective protocol converts substituted ureas into 1,5- and 1,3,5-substituted hydantoins in yields of up to 93 %.
取代的乙内酰脲的一步合成可以通过钯与脲衍生物和一氧化碳的醛催化“脲基羰基化”来实现。(1)]。这种出人意料的选择性方案可将取代的尿素转化为1,5-和1,3,5-取代的乙内酰脲,收率最高可达93%。