Process for the hydrogenolysis of dioxolanes
Patent 4088700 Issued on May 9, 1978. Estimated Expiration Date: 
May 9, 1995. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
May 9, 1995. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3170958 3277187 InventorAssigneeApplicationNo. 727078 filed on 09/27/1976US Classes:568/671, Acyclic568/678, Hydroxy containing (H of -OH may be replaced by a Group IA or IIA light metal)568/700, Hydroxy containing (H of -OH may be replaced by a Group IA or IIA light metal)568/799, Preparing by reduction or dehydrogenation (e.g., by hydrogenation, etc.)568/835, Cyclohexanol per se568/865Of etherExaminersPrimary: Helfin, BernardAttorney, Agent or FirmInternational ClassC07C 041/00AbstractAn improved process for the hydrogenolysis of acetals and ketals of organic hydrocarbons is described. The improvement resides in using a catalyst system including a halide of a Group III A element and a supported platinum or rhodium hydrogenation catalyst or combination thereof, thus enabling the process to be practiced at a temperature of from about -15° C. to about 125° C. and a pressure of from about 50 psia to about 2000 psia. The preferred Group III A halides are boron trifluoride and aluminum trichloride. |
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