A rhodium-catalyzed alcohol-mediated ortho-functionalization of 2-aryl-2H-indazoles through sequential C-H activation and carbenoid insertion with diazotized Meldrum's acid was developed. Using the 2H-indazole as the directing group and alcohol as the alkyl source, a series of ortho-alkylated aryl-2H-indazoles were obtained over a wide structural scope with high site-selectivity and excellent functional-group
开发了
铑催化的醇介导的 2-芳基-2 H-
吲唑的邻位官能化,通过连续的 CH 活化和用重
氮化的 Meldrum 酸插入卡宾酸。以 2 H-
吲唑为导向基团,醇为烷基源,得到了一系列结构范围广、位点选择性高、官能团耐受性优异的邻位烷基化芳基-2 H-
吲唑。