Process for preparing ketones, in particular macrocyclic ketones
    4.
    发明授权
    Process for preparing ketones, in particular macrocyclic ketones 有权
    制备酮的方法,特别是大环酮

    公开(公告)号:US08563781B2

    公开(公告)日:2013-10-22

    申请号:US13269016

    申请日:2011-10-07

    IPC分类号: C07C45/27

    摘要: Ketones of the formula II where A is optionally alkyl-substituted C2-C12-alkanediyl, R1 and R2 are each, independently of one another, C1-C6-alkyl, or R1 and R2 together form optionally alkyl-substituted C3-C10-alkanediyl, and R3 is hydrogen or C1-C6-alkyl, are prepared by reacting a cyclic olefin of the formula I with dinitrogen monoxide to form the ketone of the formula II. The ketone of the formula II can be further hydrogenated to form the saturated ketone of the formula III. Macrocyclic ketones of the formula III, e.g. muscone, are sought after as fragrances.

    摘要翻译: 式II的酮,其中A任选为烷基取代的C 2 -C 12 - 烷二基,R 1和R 2各自彼此独立地为C 1 -C 6 - 烷基,或者R 1和R 2一起形成烷基取代的C 3 -C 10 - 烷二基 R 3是氢或C 1 -C 6烷基,是通过使式I的环状烯与一氧化二氮反应形成式II的酮制备的。 式II的酮可以进一步氢化以形成式III的饱和酮。 式III的大环酮,例如 肌肉,被追捧为香水。

    Process for the preparation of acyloins
    5.
    发明授权
    Process for the preparation of acyloins 失效
    制备偶姻的方法

    公开(公告)号:US5831097A

    公开(公告)日:1998-11-03

    申请号:US776106

    申请日:1997-01-21

    摘要: A process for the preparation of acyloins of the general formula I ##STR1## in which R.sup.a and R.sup.b are the same or different and stand for hydrogen or an optionally substituted C.sub.1 -C.sub.20 alkyl, an optionally substituted C.sub.6 -C.sub.10 aryl, an optionally substituted C.sub.7 -C.sub.12 aralkyl, an optionally substituted heteroaryl, or an optionally substituted heterocycloalkyl group, except for autocondensation products of formaldehyde, wherein an aldehyde of the formula II R.sup.a CHO, (II) is reacted, in the presence of a catalyst, with an aldehyde of the formula III R.sup.b CHO, (III) in which R.sup.a and R.sup.b have the above meanings and at least one of the radicals R.sup.a and R.sup.b denotes a radical other than hydrogen, which have been produced, with the assistance of an auxiliary base, from a triazolium salt of the formula IV ##STR2##

    摘要翻译: PCT No.PCT / EP95 / 02660 Sec。 371日期1997年1月21日 102(e)日期1997年1月21日PCT提交1995年7月8日PCT公布。 出版物WO96 / 02484 日本1996年2月1日制备通式I(I)的偶姻的方法,其中Ra和Rb相同或不同,代表氢或任选取代的C 1 -C 20烷基,任选取代的C 6 - C 10芳基,任选取代的C 7 -C 12芳烷基,任选取代的杂芳基或任选取代的杂环烷基,除了甲醛的自缩合产物,其中式IIRaCHO,(II)的醛在催化剂存在下与 式IIIRbCHO(III)的醛,其中Ra和Rb具有上述含义,并且基团Ra和Rb中的至少一个表示除了氢以外的基团,其在辅助碱的辅助下由 (IV)的三唑鎓盐

    PROCESS FOR PREPARING KETONES, IN PARTICULAR MACROCYCLIC KETONES
    7.
    发明申请
    PROCESS FOR PREPARING KETONES, IN PARTICULAR MACROCYCLIC KETONES 有权
    用于制备克隆的方法,特别是大麻酮

    公开(公告)号:US20120088935A1

    公开(公告)日:2012-04-12

    申请号:US13269016

    申请日:2011-10-07

    IPC分类号: C07C45/29

    摘要: Ketones of the formula II where A is optionally alkyl-substituted C2-C12-alkanediyl, R1 and R2 are each, independently of one another, C1-C6-alkyl, or R1 and R2 together form optionally alkyl-substituted C3-C10-alkanediyl, and R3 is hydrogen or C1-C6-alkyl, are prepared by reacting a cyclic olefin of the formula I with dinitrogen monoxide to form the ketone of the formula II. The ketone of the formula II can be further hydrogenated to form the saturated ketone of the formula III. Macrocyclic ketones of the formula III, e.g. muscone, are sought after as fragrances.

    摘要翻译: 式II的酮,其中A任选为烷基取代的C 2 -C 12 - 烷二基,R 1和R 2各自彼此独立地为C 1 -C 6 - 烷基,或者R 1和R 2一起形成烷基取代的C 3 -C 10 - 烷二基 R 3是氢或C 1 -C 6烷基,是通过使式I的环状烯与一氧化二氮反应形成式II的酮制备的。 式II的酮可以进一步氢化以形成式III的饱和酮。 式III的大环酮,例如 肌肉,被追捧为香水。

    Preparation of 1,2,4-triazolium salts and 1,2,4-triazolines
    8.
    发明授权
    Preparation of 1,2,4-triazolium salts and 1,2,4-triazolines 失效
    1,2,4-三唑鎓盐和1,2,4-三唑啉的制备

    公开(公告)号:US5840894A

    公开(公告)日:1998-11-24

    申请号:US668140

    申请日:1996-06-21

    CPC分类号: C07D249/08 C07D249/12

    摘要: A process for the preparation of 1,2,4-triazolium salts Ia ##STR1## where R.sup.1, and R.sup.2 and R.sup.3 are C-organic radicals, it being possible for R.sup.2 and R.sup.3 to be connected to give a 5- to 8-membered ring, R.sup.4 is hydrogen or an organic radical and A is an equivalent of an anion, by reacting an amidrazone II ##STR2## with a carboxylic acid III R.sup.4 --COOH II or a functional derivative (IIIa) of this acid, an anion A being formed from III or IIIa which, optionally, can be replaced by another anion. The triazolium salts have great industrial importance as catalysts for the preparation of acyloine from aldehydes.

    摘要翻译: 一种制备1,2,4-三唑鎓盐的方法,其中R 1和R 2和R 3是C - 有机基团,可以将R 2和R 3连接,得到5-至8- R4是氢或有机基团,A是阴离子的当量,通过使氨基腙II Ib与羧酸III R4-COOH II或该酸的官能衍生物(IIIa)反应,阴离子 A由III或IIIa形成,任选地可以被另一个阴离子代替。 三唑鎓盐作为用于从醛制备偶剂的催化剂具有很大的工业重要性。