diastereo- and enantioselective route to access a wide range of highly substituted pyrrolidine and pyrrolizidine derivatives has been described via (1,3)- and double (1,3)-dipolar cycloaddition reactions catalyzed by the (R)-DM-SEGPHOS–Ag(I) complex. The reactions proceed smoothly at ambient temperature, affording a variety of pyrrolidines and pyrrolizidines in high yields (up to 93%) with up to 99:1 dr and
通过(R)-
DM-
SEGPHOS催化的(1,3)-和双(1,3)-偶极环加成反应,已经描述了一种有效的非对映和对映选择性途径,可用于广泛的高度取代的
吡咯烷和
吡咯烷并烷衍
生物。–Ag(I)络合物。反应在环境温度下平稳进行,以高收率(高达93%)和高达99:1 dr的反应提供了各种
吡咯烷和
吡咯烷核苷,并且没有任何添加剂就具有出色的对映选择性(高达98%ee)。新合成的
吡咯烷和
吡咯烷衍
生物分别包含四个和七个连续的立体异构中心。此外,已通过将对映体富集的产品转化为各种合成有用的高级中间体来证明其合成效用。