Metal-carbene unit: a universal tool towards high-efficient photochemical reaction in solution

• 来源期刊: 中国科学:化学（英文版）
• 年，卷（期）: 2019,（6）
• 页码范围: 655-656
• 页数: 2页
• 语种: 英文

摘要

Topochemically-controlled stereoselective [2+2] photocycloadditions are now well-established in the literatures.The construction of cyclobutane rings has attracted considerable attention due to the existence of this structural motif in natural products and synthetic medicines.Furthermore,cyclobutane derivatives appended with pyridyl or carboxylic groups exhibit intriguing properties in some advanced formation of metallo-supramolecular assemblies and materials.Generally,the photochemical [2+2] cycloaddition reactions are reported to take place in the solid state.Among several known methods,the photocycloaddition of olefins is recognized as one of the most promising strategies for the synthesis of cyclobutane rings.In this field,significant efforts have been devoted to exploring the structural transformations induced by photochemical [2+2] cycloaddition in the solid state [1].