卤素
化学
基础(拓扑)
光化学
有机化学
组合化学
高分子化学
烷基
数学分析
数学
作者
Kendelyn I. Bone,Thomas R. Puleo,Michael D. Delost,Yuka Shimizu,Jeffrey S. Bandar
标识
DOI:10.1002/anie.202408750
摘要
We disclose a benzylic C-H oxidative coupling reaction with alcohols that proceeds through a synergistic deprotonation, halogenation and substitution sequence. The combination of tert-butoxide bases with 2-halothiophene halogen oxidants enables the first general protocol for generating and using benzyl halides through a deprotonative pathway. In contrast to existing radical-based methods for C-H functionalization, this process is guided by C-H acidity trends. This gives rise to new synthetic capabilities, including the ability to functionalize diverse methyl(hetero)arenes, tolerance of oxidizable and nucleophilic functional groups, precision site-selectivity for polyalkylarenes and use of a double C-H etherification process to controllably oxidize methylarenes to benzaldehydes.
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