| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 26183 | Journal of Photochemistry and Photobiology A: Chemistry | 2016 | 7 Pages |
•Infrared free electron laser at Tokyo University of Science was employed as a tunable light source inducing isomerization and dissociation reaction of 2,3-dihydrofuran in the gas phase.•From the ratio of two photo isomerization products, the vibrational temperature of the hot 2,3-dihydrofuran generated through the infrared multiphoton excitation was estimated to be 1300–1500 K.•The experimentally identified reaction pathways are well explainable by quantum chemical calculations.
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.
