A highly enantioselective dearomative cascade between 2-isocyanoethylindole and 3-alkenyl-oxindoles was realized by chiral N,N′-dioxide-Mg(ii) complexes. Various spiroindolines with spiro-oxindoles were obtained in excellent results.
通过手性N,N′-二氧化物-Mg(II)配合物实现了2-异氰酸乙基吲哚和3-烯基-氧杂吲哚之间的高对映选择性脱芳香级联反应。得到了具有螺环氧杂吲哚的各种螺环吲哚烷,结果非常优秀。