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    • 3. 发明授权
    • Preparation of unsaturated and saturated ketones
    • 不饱和和饱和酮的制备
    • US4874899A
    • 1989-10-17
    • US206731
    • 1988-06-15
    • Wolfgang HoelderichLeopold HupferKurt Schneider
    • Wolfgang HoelderichLeopold HupferKurt Schneider
    • C07C45/59C07C49/11C07C49/203C07C49/21
    • C07C45/59C07C49/11C07C49/203C07C49/21Y02P20/582
    • Unsaturated ketones of the formula ##STR1## and saturated ketones of the formula ##STR2## where R.sup.1, R.sup.2 and R.sup.3 are each hydrogen, alkyl of 1 to 12 carbon atoms or a cycloalkyl, aryl, aralkyl or alkylaryl radical which inturn may be substituted, or R.sup.1 and R.sup.3 or R.sup.2 and R.sup.3, together with the carbon atoms to which they are bonded, may form a cycloalkane, are prepared by a process in which a 5-methylene-1,3-dioxolanone which is substituted in the 4-position and is of the forumla ##STR3## where R.sup.1, R.sup.2 and R.sup.3 have the above meanings, (a) for the preparation of an unsaturated ketone, is converted in the presence of a zeolite, of a phosphate having a zeolite structure and/or of B, Ce, Fe, Zr or Sr phosphate as catalysts and (b) for the preparation of a saturated ketone, is converted in the presence of the same catalysts which additionally carry one or more hydrogenation components.
    • 其中R1,R2和R3各自为氢,1至12个碳原子的烷基或可以被取代的环烷基,芳基,芳烷基或烷基芳基,其中式(IMAGE)的不饱和酮和式“IMAGE”的饱和酮, 或R 1和R 3或R 2和R 3与它们所键合的碳原子一起形成环烷烃的方法通过以下方法制备:其中在4-位被取代的5-亚甲基-1,3-二氧杂环戊酮 并且是其中R1,R2和R3具有上述含义的论文(a),(a)制备不饱和酮的方法,在沸石存在下,具有沸石结构的磷酸盐和/或 B,Ce,Fe,Zr或Sr磷酸盐作为催化剂,(b)制备饱和酮的催化剂在相同催化剂的存在下转化,另外还含有一种或多种氢化组分。