Chemo-, Regio-, and Stereoselective Copper(II)-Catalyzed Boron Addition to Acetylenic Esters and Amides in Aqueous Media
作者:Amanda K. Nelson、Cheryl L. Peck、Sean M. Rafferty、Webster L. Santos
DOI:10.1021/acs.joc.6b00648
日期:2016.5.20
Aqueous conditions were developed for conducting an open-to-air, copper(II)-catalyzed addition of pinBBdan to alkynoates and alkynamides. The simple and mild β-borylation protocol proceeds in a remarkably chemo-, regio-, and stereoselective fashion to afford 1,8-diaminonaphthalene protected (Z)-β-boryl enoates and primary, secondary, and tertiary enamides in good to excellent yields. These reactions
开发了在露天条件下进行铜(II)催化的pinBBdan加至炔酸和炔酰胺中的露天条件。简单而温和的β-硼化协议以显着的化学,区域和立体选择性方式进行,从而以良好的产率提供了1,8-二氨基萘保护的(Z)-β-硼烯酸酯和伯,仲和叔酰胺。 。这些反应显示出对各种烷基,芳基和杂原子官能团的高耐受性,并提供了对各种乙烯基硼酸衍生物的方便获得。