diastereoselective addition of hydantoin surrogates II to “rigidified” vinylidene bis(sulfone) reagents is developed, thus overcoming the inability of commonly employed β-substituted vinylic sulfones to react. Adducts are transformed in enantioenriched 5,5-disubstituted hydantoins through hydrolysis and reductive desulfonylation processes providing new structures for eventual bioassays. Density functional theory studies
开发了乙内酰
脲替代物II与“刚性化”亚
乙烯基双(砜)试剂的催化、对映和非对映选择性加成,从而克服了常用的 β-取代
乙烯基砜无法反应的问题。加合物通过
水解和还原脱磺酰化过程转化为富含对映体的 5,5-二取代乙内酰
脲,为最终的
生物测定提供新结构。还提供了使观察到的反应性和立体选择性趋势合理化的密度泛函理论研究。