多么一对!据报道,分子内 C(sp 3 ) N 偶联可提供氮杂环。该反应通过用碘氧化苄型 C,N-二价阴离子进行,并建立在合成天然产物 lyconadin A 期间的早期发现的基础上。目前的研究使用具有较低酸性 C H 键和较低活性氮亲核试剂的构象无偏底物. ZnCl 2被确定为一种重要的添加剂。
A convenient and general asymmetric transferhydrogenation of a wide array of 1-aryl-3,4-dihydroisoquinoline derivatives using a [RuIICl(η6-benzene)TsDPEN] complex in combination with a 5:2 HCOOH–Et3N azeotropic mixture as a hydrogen source was developed. Under mild reaction conditions, the described catalytic transformation secured a practical synthetic access to the corresponding valuable chiral
displayed excellent enantioselectivity and good reactivity in the asymmetric hydrogenation of challenging 1-aryl-substituted dihydroisoquinoline substrates (full conversions, up to >99% ee, 4000 TON). The use of 40% HBr (aqueous solution) as an additive dramatically improved the asymmetric induction of these catalysts. This transformation provided a highly efficient and enantioselective access to chiral
A compound of general formula (I). A process for preparing this compound. A fungicidal composition comprising a compound of general formula (I). A method for treating plants by applying a compound of general formula (I) or a composition comprising it.
A compound of general formula (I):
A process for preparing this compound.
A fungicidal composition comprising a compound of general formula (I).
A method for treating plants by applying a compound of general formula (I) or a composition comprising it.