Method for the production of substituted or unsubstituted chloromethyl
cyclopropane and bromomethyl cyclopropane
    42.
    发明授权
    Method for the production of substituted or unsubstituted chloromethyl cyclopropane and bromomethyl cyclopropane 失效
    取代或未取代的氯甲基环丙烷和溴甲基环丙烷的制备方法

    公开(公告)号:US5288932A

    公开(公告)日:1994-02-22

    申请号:US39827

    申请日:1993-03-30

    申请人: Manfred Kaufhold

    发明人: Manfred Kaufhold

    IPC分类号: C07C17/16 C07C22/00 C07C23/18

    CPC分类号: C07C17/16 C07C2101/02

    摘要: The present invention relates to a method for the production of substituted or unsubstituted chloromethyl and bromomethyl cyclopropane having a degree of purity above 85%, particularly above 90%, by reacting a hydroxymethyl cyclopropane of the formula ##STR1## where R is H, or one or two R groups are alkyl of from 1 to 10 carbon atoms or phenyl, with methane sulfonic acid chloride or methane sulfonic acid bromide in the presence of a trialkylamine and, if necessary, an organic solvent, preferably an organic solvent containing oxygen, at a temperature of from -20.degree. C. to +30.degree. C. over a period of time of from 1 to 30 hours, then heating the reaction mixture to a temperature of from 40.degree. to 80.degree. C., or to reflux temperature, without isolating the intermediate mesylate.

    摘要翻译: 本发明涉及一种制备取代或未取代的氯甲基和溴甲基环丙烷的方法,其通过使式(* CHEMICAL STRUCTURE *)的羟甲基环丙烷与R为H的化合物反应,其纯度高于85%,特别是高于90% ,或一个或两个R基团是具有1至10个碳原子的烷基或苯基,与甲烷磺酰氯或甲磺酸溴化物在三烷基胺存在下反应,如有必要,有机溶剂,优选含有氧的有机溶剂 在-20℃至+ 30℃的温度下,在1至30小时的时间内,然后将反应混合物加热至40℃至80℃的温度或回流 温度,而不分离甲磺酸中间体。

    Process for the production of chlorine-free cyclopropanecarboxylic acid
esters
    44.
    发明授权
    Process for the production of chlorine-free cyclopropanecarboxylic acid esters 失效
    生产无氯环丙烷羧酸酯的方法

    公开(公告)号:US4778920A

    公开(公告)日:1988-10-18

    申请号:US922902

    申请日:1986-10-24

    申请人: Manfred Kaufhold

    发明人: Manfred Kaufhold

    CPC分类号: C07C67/317 C07C69/74

    摘要: For the production of chlorine-free cyclopropanecarboxylic acid esters, gamma-butyrolactone and butanol are reacted, in a first step, with hydrogen chloride in the absence of a catalyst at a temperature of 120.degree.-140.degree. C., the resultant gamma-chlorobutyric acid butyl ester is cyclized at 100.degree.-200.degree. C. with a solution of a sodium alcoholate in the corresponding alcohol of 4 or more carbon atoms and this product is optionally interestified in a third step with a higher-boiling alcohol of more than 4 carbon atoms. The second and third steps can be performed in one step, if desired.

    摘要翻译: 为了生产无氯的环丙烷羧酸酯,在120-140℃的温度下,在不存在催化剂的情况下,使γ-丁内酯和丁醇在第一步中与氯化氢反应,得到的γ-氯丁酸 酸性丁酯在100℃-200℃下用醇钠在4个或更多个碳原子的醇中的溶液环化,并且该产物在第三步中任选被引入具有多于4个的高沸点醇 碳原子。 如果需要,可以在一个步骤中执行第二和第三步骤。

    2-Methoxyethyl cyclododecenyl ether and processes for its preparation
and conversion to 2-methoxyethyl cyclododecyl ether
    45.
    发明授权
    2-Methoxyethyl cyclododecenyl ether and processes for its preparation and conversion to 2-methoxyethyl cyclododecyl ether 失效
    2-甲氧基乙基环十二烯基醚及其制备和转化为2-甲氧基乙基环十二烷基醚的方法

    公开(公告)号:US4506102A

    公开(公告)日:1985-03-19

    申请号:US498628

    申请日:1983-05-27

    CPC分类号: C11B9/0038 C07C43/188

    摘要: 2-Methoxyethyl cyclododec-1-enyl ether is of interest as a precursor for the saturated ether, 2-methoxyethyl cyclododecyl ether, which can be obtained therefrom by catalytic hydrogenation, in a high purity and with a good fragrance quality. The saturated ether is a valuable fragrance component having a woody note. A process for producing 2-methylethyl cyclododec-1-enyl ether comprises the step of reacting cyclododecanone, 2-methoxyethanol and a tri(lower alkyl) orthoformate, at a temperature of 50.degree.-250.degree. C., in the presence of an acid catalyst, removing resultant low-boiling compounds by distillation, and recovering resultant 2-methoxyethyl cyclododec-1-enyl ether.

    摘要翻译: 2-甲氧基乙基环十二烷-1-烯基醚作为饱和醚,2-甲氧基乙基环十二烷基醚的前体,可以通过催化氢化获得,其高纯度和良好的香味。 饱和醚是具有木质香味的有价值的香料成分。 2-甲基乙基环十二烷-1-烯基醚的制备方法包括在50-250℃的温度下,在酸存在下使环十二烷酮,2-甲氧基乙醇和三(低级烷基)原甲酸酯反应的步骤 催化剂,通过蒸馏除去所得的低沸点化合物,并回收得到的2-甲氧基乙基环十二烷-1-烯基醚。