Double O–H insertion reactions of cyclic diazo amides 1 and dihydroxy compounds 2 in the presence of rhodium(II) acetate catalyst have been achieved, which ultimately led to the facile synthesis of prototype bis(3-oxy-1,3-dihydro-2H-indol-2-one) systems. This facile double O–H insertion reaction protocol was successfully applied to synthesize several C2-symmetric macrocycles having oxindole units incorporated
在乙酸铑(II)催化剂存在下,环状重氮酰胺1和二羟基化合物2的双O-H插入反应已实现,最终导致了原型双(3-oxy-1,3-dihydro- 2 H -indol-2-one)系统。这种简便的双OH插入反应方案已成功地用于合成几个具有完全非对映选择性并带有羟吲哚单元的C 2对称大环。