| 摘要 |
Disclosed is a process for the preparation of 2,3-dihydrofurans from the corresponding isomeric 2,5-dihydrofurans wherein a feed mixture comprising a 2,5-dihydrofuran compound and an aldehyde selected from alkanals containing 2 to 5 carbon atoms and alkenals containing 3 or 4 carbon atoms, an epoxide selected from 1,2-epoxyalkanes containing 2 to 5 carbon atoms and 3,4-epoxy-1-butene, or a mixture of 2 or more of such aldehydes or epoxides and, optionally, carbon monoxide is contacted with a supported, palladium or platinum catalyst to effect the isomerization of 2,5-dihyrofurans to 2,3-dihydrofurans.
|
