Facile dipolar cycloaddition reactions of isatins with carbonyl ylides, generated by Rh2(OAc)4 catalyzed reaction of α-diazo ketones yielding novel spiro oxindole derivatives are described.
介绍了异汀类与羰基酰化物的简便双极环加成反应,该反应由 Rh2(OAc)4 催化δ-重
氮酮反应生成,可产生新型螺
吲哚衍
生物。