Preparation of 2,3-dihydrofurans

Details Preparation of 2,3-dihydrofurans Preparation of 2,3-dihydrofurans

1995-01-31

1996-07-16

Nutter, Nathan M.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

549429, C07D31500

Patent

active

055368514

ABSTRACT:
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.

REFERENCES:
patent: 3651092 (1972-03-01), Stapp et al.
patent: 4962210 (1990-10-01), Falling et al.
patent: 5254701 (1993-10-01), Falling et al.

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