Syntheses of diarylethenes by perylene-catalyzed photodesulfonylation from ethenyl sulfones

Hikaru Watanabe, Mai Takemoto, Kazumasa Adachi, Yasuhiro Okuda, Aki Dakegata, Takahide Fukuyama, Ilhyong Ryu, Kan Wakamatsu, Akihiro Orita*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


Diarylethenes were obtained from the corresponding ethenyl sulfones by photocatalyzed desulfonylation using UV or blue LEDs. When perylene and i-Pr2NEt were used as a photocatalyst and a sacrificing reagent, respectively, this desulfonylation proceeded smoothly to afford the desired ethenes with the functional groups such as chloro, alkoxy and heteroaromatic rings remaining untouched. The use of a flow photoreactor enabled this desulfonylation to proceed more rapidly to finish in an hour of residence time.

Original languageEnglish
Pages (from-to)409-412
Number of pages4
JournalChemistry Letters
Issue number4
StatePublished - 1 Apr 2020


  • Desulfonylation
  • Perylene
  • Photochemistry

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