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    • 2. 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。
    • 4. 发明授权
    • Preparation of ketones
    • 酮的制备
    • US4866210A
    • 1989-09-12
    • US144372
    • 1988-01-15
    • Wolfgang HoelderichLeopold HupferKurt Schneider
    • Wolfgang HoelderichLeopold HupferKurt Schneider
    • C07C45/65C07C45/67
    • C07C45/65C07C45/673C07C45/676Y02P20/582
    • Ketones of the formula ##STR1## where R.sup.1 to R.sup.3 are each hydrogen and R.sup.1 to R.sup.4 are each alkyl of 1 to 12 carbon atoms, cycloalkyl of 4 to 8 carbon atoms, aryl, aralkyl or alkylaryl, which each in turn may be substituted, or R.sup.1 and R.sup.2 and R.sup.3 together with the carbon atoms to which they are bonded form a cycloalkane, are prepared by reacting ketones of the formula ##STR2## where one of R.sup.1, R.sup.2, R.sup.3 and R.sup.5 is hydroxyl, alkoxy or carboxyl while the remaining R.sup.1 to R.sup.4 have the abovementioned meanings, with hydrogen in the presence of acid catalysts supporting one or more hydrogenation components, zeolites of the pentasil type being particularly suitable.
    • 其中R 1至R 3各自为氢且R 1至R 4各自为具有1至12个碳原子的烷基,4至8个碳原子的环烷基,芳基,芳烷基或烷基芳基的式“IMAGE”的酮,其各自依次可被取代, 或者R 1和R 2和R 3与它们所键合的碳原子一起形成环烷烃,是通过使下式的酮反应制备的:其中R1,R2,R3和R5之一是羟基,烷氧基或羧基,而其余的 R1至R4具有上述含义,在负载一种或多种氢化组分的酸催化剂存在下用氢气,pentasil型沸石是特别合适的。