Process for the hydrogenation of .alpha.,.beta.-unsaturated ketones
    8.
    发明授权
    Process for the hydrogenation of .alpha.,.beta.-unsaturated ketones 失效
    α,β-不饱和酮氢化的方法

    公开(公告)号:US4940819A

    公开(公告)日:1990-07-10

    申请号:US375763

    申请日:1989-07-05

    摘要: The catalytic hydrogenation of .alpha.,.beta.-unsaturated ketones of the formulaR.sup.1 --CH.dbd.CH--CO--R.sup.2,in whichR.sup.1 and R.sup.2 independently of one another represent straight-chain or branched alkyl, hydroxy-alkyl, alkenyl, cycloalkyl, cycloalkenyl, aralkyl or aryl, where at least one of the radicals R.sup.1 and R.sup.2 is monosubstituted to trisubstituted by halogen,can be carried out on a Ni-containing catalyst and in the presence of an organic sulphur compound of the formulaR.sup.3 --S(.dbd.O).sub.n --R.sup.4in whichR.sup.3 and R.sup.4 independently of one another denote straight-chain or branched alkyl, hydroxy-alkyl, carboxyalkyl or phenyl, and furthermoreR.sup.3 and R.sup.4 may together represent --CH.dbd.CH--CH.dbd.CH--, --(CH.sub.2).sub.4 --, --(CH.sub.2).sub.5 --, --(CH.sub.2).sub.2 --S--(CH.sub.2).sub.2 -- or --(CH.sub.2).sub.2 --O--(CH.sub.2).sub.2 --,R.sup.4 may additionally denote hydrogen or CO--C.sub.1 -C.sub.12 -alkyl and n assumes the value 0 or 1.

    摘要翻译: 式R1-CH = CH-CO-R2的α,β-不饱和酮的催化氢化,其中R 1和R 2彼此独立地表示直链或支链烷基,羟基 - 烷基,烯基,环烷基,环烯基, 芳烷基或芳基,其中基团R 1和R 2中的至少一个被卤素单取代至三取代,可以在含Ni催化剂上进行,并且在式R 3 -S(= O)的有机硫化合物存在下, 其中R 3和R 4彼此独立地表示直链或支链烷基,羟基 - 烷基,羧基烷基或苯基,此外R3和R4可以一起表示-CH = CH-CH = CH-, - (CH 2) 4-, - (CH 2)5 - , - (CH 2)2 -S-(CH 2)2 - 或 - (CH 2)2 -O-(CH 2)2 - ,R 4可另外表示氢或CO-C 1 -C 12 - 烷基,n为0或1。

    Preparation of monochloromethyl ketones
    9.
    发明授权
    Preparation of monochloromethyl ketones 失效
    单氯甲基酮的制备

    公开(公告)号:US4460793A

    公开(公告)日:1984-07-17

    申请号:US329959

    申请日:1981-12-11

    摘要: A process for the production of a monochloromethyl ketone of the formula ##STR1## in which R.sup.1, R.sup.2 and R.sup.3 each independently is a hydrogen atom or an optionally substituted alkyl, alkenyl, alkinyl or aryl radical, orR.sup.1 and R.sup.2 together with the carbon atom to which they are attached form an optionally substituted carbocyclic ring,comprising reacting a 1,1-dichloroalkene of the formula ##STR2## with a phenolate of the formula ##STR3## in which R.sup.4 each independently is a halogen atom, a nitro group, or an optionally substituted alkyl, alkoxy or aryl radical,n is 0, 1, 2 or 3, andM is one equivalent of an alkali metal ion or alkaline earth metal ion,thereby to obtain a phenyl ether intermediate, and then subjecting the phenyl ether intermediate to an acid hydrolysis. The products are useful as intermediates in the synthesis of fungicides.

    摘要翻译: 制备式“IMAGE”的单氯甲基酮的方法,其中R 1,R 2和R 3各自独立地为氢原子或任选取代的烷基,烯基,炔基或芳基,或R 1和R 2与碳原子一起 它们所连接的化合物形成任选取代的碳环,包括使式IMAMA的1,1-二氯链烯与式(Ⅰa)的酚盐反应,其中R 4各自独立地为卤原子,硝基或 任选取代的烷基,烷氧基或芳基,n为0,1,2或3,M为1当量碱金属离子或碱土金属离子,从而得到苯基醚中间体,然后使苯基醚 中间体进行酸水解。 该产品可用作合成杀真菌剂的中间体。