Background: Phthalides are privileged constituents of numerous pharmaceuticals, natural products and agrochemicals and exhibit several biological and therapeutic activities. Therefore, the development of new, facile, and sustainable strategies for the construction of these moieties is highly desired.
Results: A broad substrate scope for β-keto acids was found to be strongly compatible with this catalytic process, affording a wide variety of 3-substituted phthalides in good to excellent yields.
Conclusion: A concise and efficient synthesis strategy of 3-substituted phthalides from 2-formylbenzoic acid and β-keto acids via a catalytic one-pot cascade reaction in glycerol has been accomplished.
背景:邻苯二甲酸内酯是许多药物、天然产物和农药的重要组成部分,并表现出多种生物学和治疗活性。因此,开发新的、简便且可持续的策略来构建这些结构是非常期望的。
结果:发现β-酮酸具有广泛的底物范围,与这种催化过程高度兼容,产率良好至优良,形成各种3-取代邻苯二甲酸内酯。
结论:已成功实现了从2-甲酰基苯甲酸和β-酮酸经由甘油中的催化一锅串联反应合成3-取代邻苯二甲酸内酯的简洁高效合成策略。