α-PMP-ketone group were found to be effective carbene precursors for the highly stereoselective Rh(2)(S-TCPTTL)(4)-catalyzed cyclopropanation of alkenes (EWG = NO(2), CN, CO(2)Me). The resulting products were readily transformed into a variety of biologically relevant enantiopure molecules, such as cyclopropane α- and β-amino acid derivatives. Different mechanistic studies carried out led to a rationale for the
发现带有 α-PMP-酮基的不同二受体重氮化合物是高立体选择性 Rh(2)(S-
TCPTTL)(4)-催化烯烃
环丙烷化的有效卡宾前体 (EWG = NO(2), CN, CO(2)Me)。所得产物很容易转化为各种
生物相关的对映体纯分子,例如
环丙烷α-和β-
氨基酸衍
生物。进行的不同机理研究为获得的高非对映选择性和对映选择性提供了依据,其中发现
PMP-酮部分在立体诱导过程中起着关键作用。此外,还记录了使用催化量的非手性路易斯碱来影响所开发反应的对映诱导。