Preparation of muscone, intermediates for this preparation and
preparation of said intermediates
    74.
    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。

    Isoxazolines as intermediates to furans
    76.
    发明授权
    Isoxazolines as intermediates to furans 失效
    异恶唑啉作为呋喃的中间体

    公开(公告)号:US4954633A

    公开(公告)日:1990-09-04

    申请号:US384910

    申请日:1989-07-25

    摘要: Isoxazolines of the general formula II ##STR1## in which R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are each unsubstituted or halogen-, haloalkyl-, alkoxy-, haloalkoxy-, nitro-, cyano-, dialkylphosphonyl- or alkoxycarbonyl-substituted alkyl, aryl, aralkyl, alkoxycarbonyl or dialkoxyphosphonyl, R.sup.2 and R.sup.4 are each also hydrogen and R.sup.3 is also hydroxyalkyl which is unblocked or blocked by a detachable protective group or is haloalkyl, X is hydrogen or a detachable protective group, are used to prepare furans.

    摘要翻译: 其中R 1,R 2,R 3和R 4各自是未取代的或卤素,卤代烷基 - ,烷氧基 - ,卤代烷氧基 - ,硝基 - ,氰基 - ,二烷基膦基 - 或烷氧基羰基取代的烷基的异恶唑啉 芳基,芳烷基,烷氧基羰基或二烷氧基膦酰基,R2和R4各自也是氢,R3也是被可分离的保护基团阻断或封闭的羟基烷基,或者是卤代烷基,X是氢或可分离的保护基,用于制备呋喃。

    Preparation of 2-(hydroxyphenoxy)-carboxylates
    79.
    发明授权
    Preparation of 2-(hydroxyphenoxy)-carboxylates 失效
    2-(羟基苯氧基) - 羧酸酯的制备

    公开(公告)号:US4489207A

    公开(公告)日:1984-12-18

    申请号:US450380

    申请日:1982-12-16

    IPC分类号: C07C69/712 C07C69/76

    CPC分类号: C07C69/712

    摘要: 2-(Hydroxyphenoxy)-carboxylates are prepared by a process wherein a dihydroxybenzene (A) is reacted with a 2-halo-fatty acid ester (B) of an alcohol, phenol or oxime of no more than 10 carbon atoms, in a molar ratio of A:B.gtoreq.1.5, in the presence of calcium hydroxide in dimethylsulfoxide, at from 0.degree. to 100.degree. C.

    摘要翻译: 2-(羟基苯氧基) - 羧酸盐的制备方法是使二羟基苯(A)与不超过10个碳原子的醇,苯酚或肟的2-卤代脂肪酸酯(B)以摩尔 在氢氧化钙存在下,在二甲基亚砜中,在0〜100℃下,A:B> = 1.5的比例。