Keeping the name clean: [2+2] photocycloaddition

Crossed [2 + 2] photocycloaddition is a specific case of intramolecular photocycloaddition reaction. Recently, the term crossed [2 +2] photocycloaddition is interchangeably used to represent intermolecular [2 +2] photocycloaddition reactions of two dissimilar double bonds/alkenes. To avoid confusion and to help researchers use the correct terminologies, this perspective clarifies the terminology used for different [2 +2] photocycloaddition processes based on prior literature with the hope of establishing a standard for addressing the diverse set of photocycloaddition reactions that will be helpful to the chemical community. [GRAPHICS] .

Automated summary

This perspective clarifies the terminology used for different [2 +2] photocycloaddition processes and aims to establish a standard to assist researchers in using the correct terminologies.