The synthesis of chiral C2-symmetric bis(bipyridine N,N′-dioxide) and bis(bipyridine N-monooxide) derivatives featuring bipyridine-annulated bicyclo[3.3.1]nonane framework is reported. The new Lewis basic bipyridine N,N′-dioxides exhibited good catalytic activity in the asymmetric allylation of aldehydes with allyltrichlorosilane, furnishing corresponding homoallylic alcohols in up to 75% ee. Reduction
报道了具有联
吡啶环化的双环[3.3.1]
壬烷骨架的手性C 2对称双(联
吡啶N,N'-二氧化物)和双(联
吡啶N-一氧化物)衍
生物的合成。新的路易斯碱性联
吡啶N,N'-二氧化物在醛与烯丙基三
氯硅烷的不对称烯丙基化反应中显示出良好的催化活性,提供了高达75%ee的相应的均烯丙基醇。联
吡啶N,N'催化三
氯硅烷还原酮
亚胺和β-烯胺酯-二氧化物的收率很高,但对映选择性中等(38-54%ee);在室温下,α-亚
氨基酯的还原可达到良好的不对称诱导
水平(高达73%ee)。