作者:Jørn E. Tungen、Renate Kristianslund、Anders Vik、Trond V. Hansen
DOI:10.1021/acs.joc.9b01294
日期:2019.9.20
A highly efficient and regioselective bromolactonization protocol is reported. The quantitative formation of synthetically versatile bromolactones occurs in the presence of only 0.1 mol % of an organoselenium compound, coined DECAD herein, within 90 min. DECAD is conveniently prepared on multigram scale from cheap racemic camphor. The presented protocol was easy to scale up and performed equally well
据报道,一种高效且区域选择性的溴化内酯化方案。合成通用的溴内酯的定量形成是在90分钟内,仅存在0.1 mol%的有机硒化合物(在本文中称为DECAD)的情况下发生的。DECAD是从便宜的外消旋樟脑以克为单位方便地制备的。所提出的协议易于扩展,并且在克规模上表现同样出色。对该机理的研究表明,DECAD原位形成了硒烯。