A catalytic desymmetrization of strained alkenes by ring-opening of meso-diazabicycles with acyl anion nucleophiles is reported. Densely functionalized trans-1,2-hydrazinoacyl cyclopentene building blocks are obtained stereoselectively. The acyl anion equivalent is generated in situ under very mild conditions from readily available organoboron precursors.
据报道,通过用酰基阴离子亲核试剂使中二
氮杂双环开环,可对应变烯烃进行催化脱对称。立体选择性地获得密集官能化的反式1,2-
肼基酰基
环戊烯结构单元。酰基阴离子当量是在非常温和的条件下从容易获得的有机
硼前体中原位生成的。