Enhancing the Scope of the Diels–Alder Reaction through Isonitrile Chemistry: Emergence of a New Class of Acyl-Activated Dienophiles
作者:Steven D. Townsend、Xiangyang Wu、Samuel J. Danishefsky
DOI:10.1021/ja303876e
日期:2012.6.27
valuable family of dienophiles for servicing Diels-Alderreactions. These systems are assembled through extension of recently discovered isonitrile chemistry to the domain of α,β-unsaturated acids. Cycloadditions are facilitated by Et(2)AlCl, presumably via chelation between the two carbonyl groups of the N-formyl amide. Applications of the isonitrile/Diels-Alder logic to the IMDA reaction, as well as methodologies