Isomerization and dissociation of 2,3-dihydrofuran (2,3-DHF) induced by infrared free electron laser

M. Matsubara, F. Osada, M. Nakajima, T. Imai, K. Nishimura, T. Oyama, K. Tsukiyama

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4 Citations (Scopus)


We investigated infrared multiphoton dissociation and isomerization reactions of 2,3-dihydrofuran (2,3-DHF), cyclopropanecaboxaldehyde (CPCA) and crotonaldehyde (CA) with free electron laser at Tokyo University of Science (FEL-TUS). From 2,3-DHF as a starting material, CPCA and CA were the main isomerization products. From the measured [CPCA]/[CA] ratio, the equivalent temperature for the vibrationally hot 2,3-DHF was estimated to be 1300-1500 K. From CPCA, both 2,3-DHF and CA were detected as isomerization products. No isomerization reaction from trans-CA to CPCA and 2,3-DHF was recognized and the dissociation to propylene was the dominant process. The experimentally identified reaction pathways are well explainable by quantum chemical calculations at the MP2/cc-pVDZ level.

Original languageEnglish
Pages (from-to)53-59
Number of pages7
JournalJournal of Photochemistry and Photobiology A: Chemistry
Publication statusPublished - 15 May 2016


  • Free electron laser
  • Isomerization
  • Multiphoton absorption
  • Quantum chemical calculation


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