Preparation of enantioenriched iodinated pyrrolinones by iodocyclization of α-amino-ynones
作者:Rosella Spina、Evelina Colacino、Bartolo Gabriele、Giuseppe Salerno、Jean Martinez、Frédéric Lamaty
DOI:10.1039/c2ob26427g
日期:——
The unprecedented electrophilic iodo-mediated cyclization of α-amino-ynones afforded enantiomerically enriched β-iodopyrrolin-4-ones in excellent yields under mild conditions. The starting substituted α-amino-ynones were obtained from the chiral pool by selective mono-addition of an organolithium to optically pure N-protected carboxyanhydrides of amino acids (UNCAs).
前所未有的电亲核碘介导的α-氨基-炔酮环化反应在温和条件下以优异的产率获得了对映体富集的β-碘吡咯林-4-酮。起始的取代α-氨基-炔酮是通过对光学纯的氨基酸N保护的羧酸酸酐(UNCA)选择性单加成有机锂化合物获得的。