hydroperoxide as the sole reagent of the reaction to combine coumarins and ethers in reasonable yields under metal- and solvent-free reaction conditions. This protocol also worked well with coumarin-3-carboxylic acids to unveil a rare instance of a catalyst-free tandem alkylation/decarboxylation reaction with conservation of the double bond.
通过未活化的Csp 2 –Csp 3键的交叉脱氢偶联,开发了
香豆素在C-3上的区域选择性直接烷基化反应。该方案使用叔
丁基氢过氧化物作为反应的唯一试剂,以在无
金属和无溶剂的反应条件下以合理的收率结合
香豆素和醚。该方案还与
香豆素-3-
羧酸一起使用,揭示了一种罕见的无催化剂的串联双烷基化/脱羧反应,并保留了双键。