Answers are grounded in this paper and cite their sources.
The photochemical reaction of aldehydes (propionaldehyde and benzaldehyde) and furan have been studied in the liquid phase; two new compounds, oxetanes I and II have easily been produced with a high purity by this photo-reaction. In the case of 2-methylfuran and propionaldehyde (or benzaldehyde), a mixture of oxetanes III and IV (or V and VI) has also been obtained.
No takes yet. Share an insight, caveat, or question.
Toki et al. (1965) studied this question.
Synapse has enriched 5 related papers. Consider them for comparative context: