Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Patent
1995-09-05
1997-11-18
Chan, Nicky
Organic compounds -- part of the class 532-570 series
Organic compounds
Heterocyclic carbon compounds containing a hetero ring...
C07D31712
Patent
active
056889739
ABSTRACT:
Process for the production of 2-vinyl-1,3-dioxolane reacting acrolein with ethylene glycol in the presence of a solid, acidic catalyst and recovery of the reaction mixture. Selectivity may be increased in comparison with known prior art processes by performing the reaction in the presence of a solid acidic catalyst at a temperature of below 50.degree. C.; the reaction mixture, from which the catalyst has been removed, is treated by extraction using an organic solvent which substantially does not dissolve ethylene glycol and has a boiling point of above 130.degree. C.; the two phases obtained on extraction are treated for recovery by distillation and recovered educts and the organic solvent are recycled.
REFERENCES:
patent: 3014924 (1961-12-01), Brachman
patent: 4108869 (1978-08-01), Copelin
patent: 5216179 (1993-06-01), Hoepp et al.
Piasecki, A., et al., "Reaction products of prop-2-enal with 1,2- and 1,3-diols", J. Prakt. Chem. (1987), vol. 329(4), pp. 543-554.
Fischer, R.F., et al., "Cyclic acrolein acetals", J. Org. Chem. (1960), pp. 319-324.
Piasecki, A., "Reaction products of prop-2-enal and but-2-enal with mixture: n-aliphatic alcohol and ethylene glycol", J. Prakt. Chem. (1987), vol. 329(4), pp. 579-586.
Arntz Dietrich
Boeck Wolfgang
Bosse-Plois Andreas
Hoepp Mathias
Raible Klaus
Chan Nicky
Degussa - Aktiengesellschaft
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