Process for the Preparation of Cyclopentanone Derivatives
    1.
    发明申请
    Process for the Preparation of Cyclopentanone Derivatives 失效
    环戊酮衍生物的制备方法

    公开(公告)号:US20080214859A1

    公开(公告)日:2008-09-04

    申请号:US12067882

    申请日:2006-11-02

    IPC分类号: C07C69/757

    摘要: The present invention relates to the field of organic synthesis and more particularly to a new process for the preparation of an acetal derivative of an alkyl 3-oxo-2-(2-oxoethyl)-1-cyclopentaneacetate. The invention also relates to a method to use said acetal derivative to prepare intermediates useful for the preparation of perfuming ingredients.

    摘要翻译: 本发明涉及有机合成领域,更具体地说涉及制备3-氧代-2-(2-氧代乙基)-1-环戊烷乙酸烷基酯的缩醛衍生物的新方法。 本发明还涉及使用所述缩醛衍生物制备可用于制备加香成分的中间体的方法。

    Esters and their use in perfumery
    2.
    发明授权
    Esters and their use in perfumery 失效
    芹菜及其在鲜花中的使用

    公开(公告)号:US5166412A

    公开(公告)日:1992-11-24

    申请号:US741027

    申请日:1991-08-06

    CPC分类号: C07C69/003

    摘要: The compounds of the formula ##STR1## wherein R represents a 3,3-dimethyl-1-cyclopentyl or a 3,3-dimethyl-1-1cyclohexyl radical, R.sup.5 represents a saturated, linear or branched, C.sub.1 to C.sub.3 alkyl radical and, either R.sup.1 and R.sup.2 stand each for a hydrogen atom, R.sup.3 and/or R.sup.4 representing a methyl radical, or R.sup.3 and R.sup.4 represent each a hydrogen atom, R.sup.1 and/or R.sup.2 representing then a methyl radical, are novel compounds and useful perfuming ingredients, capable of imparting to the compositions into which they are incorporated odor notes of the musky-ambrette and fruity type.A process for the preparation of compounds (I) is disclosed.

    摘要翻译: 式(I)的化合物其中R表示3,3-二甲基-1-环戊基或3,3-二甲基-1-环己基,R 5表示饱和的,直链或支链的C 1至C 3烷基 并且,R 1和R 2各自表示氢原子,R 3和/或R 4表示甲基,或R 3和R 4各自表示氢原子,表示然后为甲基的R 1和/或R 2为新的化合物,并且可用 加香成分,能够赋予它们所组合的组合物麝香和香味类型的气味。 公开了制备化合物(I)的方法。

    Process for the preparation of polyunsaturated cyclic compounds
    4.
    发明授权
    Process for the preparation of polyunsaturated cyclic compounds 失效
    多不饱和环状化合物的制备方法

    公开(公告)号:US4967033A

    公开(公告)日:1990-10-30

    申请号:US472921

    申请日:1990-01-31

    申请人: Cyril Mahaim

    发明人: Cyril Mahaim

    摘要: The polyunsaturated compounds of formula ##STR1## having two conjugated double bonds in the endo- and exo- positions of the pentagonal cycle indicated by the dotted lines, and wherein symbols R.sup.1 and R.sup.2, when taken separately, represent respectively a. a linear or brached C.sub.1 to C.sub.4 alkyl radical and b. an hydrogen atom or a methyl radical, or, when taken together with the carbon atoms to which they are bonded form a polymethylenic cycle such as indicated by the dotted line, containing from 5 to 12 carbon atoms, and symbol R.sup.3 stands for an hydrogen atom or a methyl radical, n being an integer equal to 0 or 1, which are useful intermediate products for the preparation of odoriferous macrocyclic ketones, are prepared according to a process comprising a vapor phase cyclization of an enone of formula ##STR2## wherein the dotted line and the symbols n, R.sup.1, R.sup.2 and R.sup.3 are defined as above, effected by means of a thermal treatment of said enone in the presence of a cyclization catalyst consisting of an aluminum, silicium, titanium or zirconium oxide.

    摘要翻译: 在虚线表示的五边形周期的内外部中具有两个共轭双键的式(I)的多不饱和化合物,其中符号R1和R2分别代表a。 线性或拉伸的C1至C4烷基,b。 氢原子或甲基,或者当与它们所键合的碳原子一起形成含有5至12个碳原子的虚线所示的多亚甲基循环时,符号R3代表氢原子 或甲基,n是等于0或1的整数,其是用于制备有气味的大环酮的有用的中间产物,根据包含式(I)的烯酮的气相环化的方法制备, 其中虚线和符号n,R1,R2和R3如上所定义,通过在由铝,硅,钛或氧化锆组成的环化催化剂存在下,通过所述烯酮的热处理实现。

    Carboxylic esters for the preparation of a bicyclic decalin ketone
    6.
    发明授权
    Carboxylic esters for the preparation of a bicyclic decalin ketone 失效
    用于制备双环十氢萘酮的羧酸酯

    公开(公告)号:US5453525A

    公开(公告)日:1995-09-26

    申请号:US280909

    申请日:1994-07-27

    摘要: Perhydro-5,5-8a-trimethyl-2-naphthalenone is prepared by acid cyclization of carboxylic esters of formula ##STR1## having a double bond in one of the positions indicated by the dotted lines and wherein symbol R designates a C.sub.1 -C.sub.6 alkyl radical, X stands for a monovalent radical of formula P(O)(OR.sup.1).sub.2 or C(O)R.sup.2, R.sup.1 represents a C.sub.1 -C.sub.6 alkyl group and R.sup.2 is either a linear or branched alkyl group or a substituted or unsubstituted phenyl radical, and wherein the wavy line represents a C--C bond of cis or trans configuration, or of formula ##STR2## wherein the wavy lines and symbol R are defined as above, and R.sup.0 represents a C.sub.3 -C.sub.6 alkyl radical, preferably branched, followed by basic decarboxylation of the obtained product.

    摘要翻译: 通过在由虚线表示的一个位置中具有双键的式(II)的羧酸酯进行酸环化制备全氢-5,5-甲基-2-萘酮,其中符号R表示C1 -C 6烷基,X表示式P(O)(OR 1)2或C(O)R 2的一价基团,R 1表示C 1 -C 6烷基,R 2为直链或支链烷基或取代或 未取代的苯基,并且其中波浪线表示顺式或反式构型的CC键,或式R的定义如上,R 0表示C 3 -C 6烷基,优选支链,然后进行所得产物的碱性脱羧。

    Process for the preparation of a bicyclic decalin ketone
    7.
    发明授权
    Process for the preparation of a bicyclic decalin ketone 失效
    制备双环十氢萘酮的方法

    公开(公告)号:US5386039A

    公开(公告)日:1995-01-31

    申请号:US94679

    申请日:1993-07-20

    摘要: Perhydro-5,5-8a-trimethyl-2-naphthalenone is prepared by acid cyclization of carboxylic esters of formula ##STR1## having a double bond in one of the positions indicated by the dotted lines and wherein symbol R designates a C.sub.1 -C.sub.6 alkyl radical, X stands for a monovalent radical of formula P(O)(OR.sup.1).sub.2 or C(O)R.sup.2, R.sup.1 represents a C.sub.1 -C.sub.6 alkyl group and R.sup.2 is either a linear or branched alkyl group or a substituted or unsubstituted phenyl radical, and wherein the wavy line represents a C--C bond of cis or trans configuration, or of formula ##STR2## wherein the wavy lines and symbol R are defined as above, and R.sup.0 represents a C.sub.3 -C.sub.6 alkyl radical, preferably branched, followed by basic decarboxylation of the obtained product.

    摘要翻译: 通过在由虚线表示的一个位置中具有双键的式(II)的羧酸酯进行酸环化制备全氢-5,5-甲基-2-萘酮,其中符号R表示C1 -C 6烷基,X表示式P(O)(OR 1)2或C(O)R 2的一价基团,R 1表示C 1 -C 6烷基,R 2为直链或支链烷基或取代或 未取代的苯基,并且其中波浪线表示顺式或反式构型的CC键,或式R的定义如上,R 0表示C 3 -C 6烷基,优选支链,然后进行所得产物的碱性脱羧。