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    Thermolysis of styrene oxide
    2.
    发明授权
    Thermolysis of styrene oxide 失效
    氧化苯乙烯的热解

    公开(公告)号：US3927110A

    公开(公告)日：1975-12-16

    申请号：US43467574

    申请日：1974-01-18

    申请人： COSDEN OIL & CHEM CO

    发明人： WATSON JAMES M

    IPC分类号： C07C47/228 ,  B01J27/00 ,  C07B61/00 ,  C07C45/00 ,  C07C45/58 ,  C07C67/00 ,  C07C45/22

    CPC分类号： C07C45/58 ,  C07C47/228

    摘要： Styrene oxide is heated under relatively mild temperature conditions to cause thermolysis. Such thermolysis produces substantial quantities of phenylacetaldehyde in the reaction product. The heating of the styrene oxide is accomplished in the presence of a small quantity of an alkaline earth metal sulfonate. Very small quantities of the alkaline earth metal sulfonate alleviate inhibitive tendencies of the reaction from styrene oxide to phenylacetaldehyde, while somewhat larger quantities markedly promote the reaction. Magnesium sulfonate and calcium sulfonate are preferred. Commercially pure phenylacetaldehyde is recovered from the reaction product.

    摘要翻译： 在相对温和的温度条件下加热氧化苯乙烯以引起热解。 这种热解在反应产物中产生大量苯乙醛。 在少量的碱土金属磺酸盐的存在下，氧化苯乙烯的加热是完成的。 非常少量的碱土金属磺酸盐缓解了从苯乙烯氧化物到苯乙醛的反应的抑制倾向，而稍大的量显着促进了反应。 优选磺酸镁和磺酸钙。 从反应产物中回收市售的苯乙醛。

    Thermolysis of styrene oxide
    4.
    发明授权
    Thermolysis of styrene oxide 失效
    苯乙烯氧化物的热解

    公开(公告)号：US3860614A

    公开(公告)日：1975-01-14

    申请号：US33545673

    申请日：1973-02-26

    申请人： COSDEN OIL & CHEM CO

    发明人： WATSON JAMES M

    IPC分类号： C07C45/00 ,  C07C45/58 ,  C07C45/82 ,  C07C47/228 ,  C07C67/00 ,  C07D13/00 ,  C07C45/22

    CPC分类号： C07C45/58 ,  C07C45/82 ,  C07C47/228

    摘要： Styrene oxide is heated under relatively mild temperature conditions to cause thermolysis. Such thermolysis produces substantial quantities of phenylacetaldehyde in the reaction product. Substantially pure phenylacetaldehyde may be recovered from the crude reaction product by distillation procedure, or other separation means, or, if desired, the phenylacetaldehyde may be directly converted in the crude reaction product to produce its acetals. The process of thermolysis of styrene oxide may be conducted with the styrene oxide in liquid phase, in vapor phase, or in solution within an inert solvent. The conditions of reaction are maintained to achieve a mild decomposition, described as thermolysis, as contrasted to a drastic decomposition, a so-called pyrolysis.

    摘要翻译： 在相对温和的温度条件下加热氧化苯乙烯以引起热解。 这种热解在反应产物中产生大量苯乙醛。 可以通过蒸馏程序或其他分离方法从粗反应产物中回收基本上纯的苯基乙醛，或者如果需要，可以将苯乙醛直接转化成粗反应产物以产生其缩醛。 氧化苯乙烯的热解过程可以用苯乙烯氧化物在液相中，气相或在惰性溶剂中的溶液中进行。 保持反应的条件以达到轻度分解，被描述为热解，与剧烈的分解（所谓的热解）相反。

    Procedure for the preparation of saturated and unsaturated dialdehydes
    5.
    发明授权
    Procedure for the preparation of saturated and unsaturated dialdehydes 失效
    制备饱和和不饱和二醛的方法

    公开(公告)号：US4177214A

    公开(公告)日：1979-12-04

    申请号：US865248

    申请日：1977-12-28

    申请人： Francesco Siclari ,  Pietro P. Rossi ,  Cesare Guaita ,  Vito L'Acqua

    发明人： Francesco Siclari ,  Pietro P. Rossi ,  Cesare Guaita ,  Vito L'Acqua

    IPC分类号： B01J23/00 ,  B01J31/00 ,  C07B61/00 ,  C07C45/00 ,  C07C45/40 ,  C07C45/57 ,  C07C45/62 ,  C07C47/12 ,  C07C47/20 ,  C07C47/21 ,  C07C67/00 ,  C07C45/22

    CPC分类号： C07C47/21 ,  C07C45/40 ,  C07C45/57 ,  C07C45/62 ,  C07C47/12

    摘要： There is described a procedure for preparing unsaturated or saturated .al.,.omega.-dialdehydes, wherein the monoozonide of the corresponding olefine undergoes hydrogenation in a solution and in presence of a catalyst system comprising(A) a noble metal comprising palladium or platinum and carried on a carrier comprising alumina, coal or barium sulphate, and(B) at least one compound of a heavy metal, and wherein, when a saturated dialdehyde is to be prepared, the unsaturated dialdehyde prepared as above undergoes a further catalytic hydrogenation in an organic solvent after removal of component (B) of the said system by means of a treatment with an ion-exchange resin acidified with sulphuric acid, the resin being of such quantity that the acid equivalents of the resin are at least equal to the equivalents of the heavy metal in the component (B) of said catalytic system.

    摘要翻译： 描述了制备不饱和或饱和的α，ω-二醛的方法，其中相应的烯烃的单卤代烃在溶液中和催化剂体系的存在下进行氢化，所述催化剂体系包含（A）包含钯或铂的贵金属并承载在 载体，其包含氧化铝，煤或硫酸钡，和（B）至少一种重金属化合物，并且其中当制备饱和二醛时，如上制备的不饱和二醛在有机溶剂中经过进一步催化氢化 通过用硫酸酸化的离子交换树脂处理除去所述系统的组分（B），树脂的量等于树脂的酸当量至少等于重金属的当量 在所述催化体系的组分（B）中。