Preparation of muscone, intermediates for this preparation and
preparation of said intermediates
    2.
    发明授权
    Preparation of muscone, intermediates for this preparation and preparation of said intermediates 失效
    麦芽糖的制备,本制剂的中间体和制备中间体

    公开(公告)号:US5081311A

    公开(公告)日:1992-01-14

    申请号:US524929

    申请日:1990-05-18

    摘要: Muscone of the formula I ##STR1## is prepared by a process in which an open-chain 2,15-diketone of the general formula IICH.sub.3 --CO--X--CO--CH.sub.3 (II)where X is one of the radicals--(--CH.sub.2 --).sub.12 -- (a)--CH.dbd.CH--(--CH.sub.2 --).sub.8 --CH.dbd.CH-- (b)--CH.sub.2 --CH.dbd.CH--(--CH.sub.2 --).sub.6 --CH.dbd.CH--CH.sub.2 --(c)--CH.sub.2 --CH.sub.2 --CH.dbd.CH--(--CH.sub.2 --).sub.4 --CH.dbd.CH--CH.sub.2 --CH.sub.2 -- (d) or--CH.sub.2 --CH.sub.2 CH.sub.2 --CH.dbd.CH--(--CH.sub.2 --).sub.2 --CH.dbd.CH--CH.sub.2 --CH.sub.2 --CH.sub.2 -- (e)is brought into contact, at from 300.degree. to 400.degree. C. in the presence of from 5 to 15% by weight, based on the amount of catalyst, of water, in the gas phase, with a fixed-bed catalyst containing TiO.sub.2, CeO.sub.2 or the ThO.sub.2 as the catalytically active compound and the unsaturated cyclic ketone formed by intramolecular aldol condensation is subjected to catalytic hydrogenation. Furthermore, the open-chain unsaturated ketones of the formulae IIb, IIc and IId and advantageous processes for their preparation and their use as intermediates for a simple industrial synthesis of muscone are claimed.

    摘要翻译: 通式Ⅰ(I)的肌醇通过以下方法制备,其中通式II CH3-CO-X-CO-CH3(Ⅱ)的开链2,15-二酮其中X是 基团 - ( - CH2-)12-(a)-CH = CH - ( - CH2-)8-CH = CH-(b)-CH2-CH = CH-( - CH2-)6-CH = CH-CH2 - (c)-CH 2 -CH 2 -CH = CH - ( - CH 2 - )4 -CH = CH-CH 2 -CH 2 - (d)或-CH 2 -CH 2 CH 2 -CH = CH - ( - CH 2 - )2 -CH = CH-CH 2 -CH 2 -CH 2 - (e)在300-400℃下,以5-15重量%的量存在下,基于催化剂的量,在气体中 使用含有TiO 2,CeO 2或ThO 2作为催化活性化合物的固定床催化剂和通过分子内醛醇缩合形成的不饱和环酮进行催化氢化。 此外,要求具有式IIb,IIc和IId的开链不饱和酮及其制备的有利方法及其作为简单的工业合成肌肉的中间体的用途。

    Preparation of ketones
    3.
    发明授权
    Preparation of ketones 失效
    酮的制备

    公开(公告)号:US4950763A

    公开(公告)日:1990-08-21

    申请号:US381469

    申请日:1989-07-18

    摘要: Ketones of the general formula (I) ##STR1## where R.sup.1 and R.sup.2 independently of one another are each alkyl, cycyloalkyl, arylalkyl, aryl or hetaryl, and one or more of the radicals R.sup.1 and R.sup.2 carry one or more hydrogen atoms on the .alpha.-carbon atom, are prepared by reacting two carboxylic acids of the general formulae (IIa/IIb), R.sup.1 --COOH (IIa) and R.sup.2 --COOH (IIb) or by reacting a carboxylic acid R.sup.1 --COOH (IIa) and a ketone ##STR2## or by reacting a mixture of IIa, IIb and Ib, in the gas phase in the presence of a catalyst, by a process in which a catalyst is used whose active material contains at least 50% by weight of titanium dioxide having a specific surface area greater than 10 m.sup.2 /g.0.

    摘要翻译: 其中R 1和R 2彼此独立地为烷基,氰基烷基,芳基烷基,芳基或杂芳基的通式(I)的酮,其中R 1和R 2中的一个或多个携带一个或多个氢原子 通过使通式(IIa / IIb),R1-COOH(IIa)和R2-COOH(IIb)的两种羧酸反应或通过使羧酸R1-COOH(IIa)和 酮(Ib)或IIa,IIb和Ib的混合物在气相中,在催化剂存在下,通过使用活性物质含有至少50重量%的催化剂的方法 的比表面积大于10m 2 / g的二氧化钛。

    Preparation of cyclic ketones
    4.
    发明授权
    Preparation of cyclic ketones 失效
    环酮的制备

    公开(公告)号:US5426235A

    公开(公告)日:1995-06-20

    申请号:US251041

    申请日:1994-06-01

    IPC分类号: C07C45/00 C07C45/48

    CPC分类号: C07C45/00

    摘要: Cyclic ketones of the general formula I ##STR1## where n is an integer from 4 to 6, are prepared by reacting aliphatic dicarbonitriles of the general formula IINC--(CH.sub.2).sub.n --CN (II),where n has the abovementioned meaning, in the gas phase in the presence of water at from 250.degree. to 500.degree. C. on solid oxide catalysts.

    摘要翻译: 通式II NC-(CH 2)n -CN(II)的脂族二腈通过使通式II NC-(CH2)n-CN(II)的脂肪族二腈反应来制备通式I的环酮,其中n是4-6的整数,其中n具有 在固体氧化物催化剂上,在250〜500℃的水存在下,在气相中。