Cascade condensation, cyclization, intermolecular dipolar cycloaddition by multi-component coupling and application to a synthesis of (±)-crispine A
作者:Iain Coldham、Samaresh Jana、Luke Watson、Nathaniel G. Martin
DOI:10.1039/b822743h
日期:——
A general approach for the synthesis of various nitrogen-containing heterocyclic compounds is described using an intermolecular dipolarcycloaddition reaction of azomethine ylides and nitrones. Stabilized and non-stabilized azomethine ylide dipoles or the related nitrones were generated by condensation of 4-, 5- or 6-halo-aldehydes with a readily available amino-acid, amino-ester or hydroxylamine to