知搜-全球专利检索

  1. 登录
  2. 注册

搜索结果

10 条记录 (耗时 0.011 秒)

    Process for preparing aromatic methylene-dioxy compounds
    1.
    发明授权
    Process for preparing aromatic methylene-dioxy compounds 失效
    制备芳族亚甲基二氧化合物的方法

    公开(公告)号：US4183861A

    公开(公告)日：1980-01-15

    申请号：US764424

    申请日：1977-01-31

    申请人： Paolo Maggioni

    发明人： Paolo Maggioni

    IPC分类号： B01J31/00 ,  C07B61/00 ,  C07D317/50 ,  C07D317/44

    CPC分类号： C07D317/50

    摘要： A method for preparing aromatic methylenedioxybenzene products which are optionally substituted in the aromatic ring by alkyl, aldehydo, carboxy, alkoxy, halo or nitro moieties; which comprises treating the corresponding dihydroxybenzene with methylene chloride in the presence of a catalyst selected from among ammonium, phosphonium or arsonium chlorides and bromides. The reaction is conducted in the aqueous phase in the presence of a suitable base, such as a sodium derivative to form a sodium salt of the dihydroxybenzene reactant.The aromatic methylenedioxy products of this invention are known compounds which are used in the chemical, pharmaceutical and cosmetic industries and they have utility as intermediates in the preparation of other known compounds.

    摘要翻译： 芳香族亚甲二氧基苯产物的制备方法，其任选在芳环中被烷基，醛，羧基，烷氧基，卤素或硝基部分取代; 其包括在选自铵，鏻或氯化钪和溴化物的催化剂存在下用二氯甲烷处理相应的二羟基苯。 反应在水相中，在合适的碱如钠衍生物的存在下进行，形成二羟基苯反应物的钠盐。 本发明的芳族亚甲二氧基产物是用于化学，制药和化妆品工业中的已知化合物，它们可用作制备其它已知化合物的中间体。

    Process for producing difunctional aliphatic organic compounds
    4.
    发明授权
    Process for producing difunctional aliphatic organic compounds 失效
    二官能脂肪族有机化合物的制备方法

    公开(公告)号：US4322547A

    公开(公告)日：1982-03-30

    申请号：US170956

    申请日：1980-07-21

    申请人： Francesco Minisci ,  Paolo Maggioni ,  Attilio Citterio

    发明人： Francesco Minisci ,  Paolo Maggioni ,  Attilio Citterio

    IPC分类号： C07C51/36 ,  C07C409/20 ,  C07C409/22 ,  C07C409/40 ,  C07C67/10 ,  C07C67/22 ,  C07C99/00 ,  C07C120/00

    CPC分类号： C07C255/00 ,  C07C407/00 ,  C07C51/36

    摘要： Process industrially and economically useful for preparing difunctional aliphatic organic compounds of formulaX-(CH.sub.2).sub.n -Yin which n=6,7, X=--COOH, --COOR, Y=--CN, --COOH, --CONH.sub.2, --CH.sub.2 --NH.sub.2 --COOR wherein R is a linear or branched alkyl containing 1-6 carbon atoms.The process starts from a ketone of the formula ##STR1## in which n=2,3 and R.sub.1 =--CN, --COOH. The ketone (I) is changed to the corresponding hydroperoxide by means of H.sub.2 O.sub.2, the hydroperoxide is catalytically split by means of a catalyst Fe.sup.++ /Cu.sup.++ to give an unsaturated acid of the formulaHOOC--(CH.sub.2).sub.3 --CH.dbd.CH--(CH.sub.2).sub.2 -R.sub.1and this is catalytically hydrogenated to the compoundHOOC--(CH.sub.2).sub.n -R.sub.1When R.sub.1 is different from Y, R.sub.1 is changed to Y through known methods.

    摘要翻译： 工业上和经济上可用于制备其中n = 6,7，X = -COOH，-COOR，Y = -CN，-COOH，-CONH 2，-CH 2 -NH 2的式X-（CH 2）n Y的二官能脂族有机化合物 -COOR，其中R是含1-6个碳原子的直链或支链烷基。 该方法从其中n = 2,3和R 1 = -CN，-COOH的式“I”酮的酮开始。 通过H 2 O 2将酮（I）改变成相应的氢过氧化物，通过催化剂Fe ++ / Cu ++催化分解氢过氧化物，得到式HOOC-（CH 2）3 -CH = CH-（CH 2） ）2-R1，并且其被催化氢化成化合物HOOC-（CH 2）n -R 1当R 1不同于Y时，通过已知方法将R 1改变为Y。

    Process for preparing 2,3-dihydro-2,2-dimethylbenzofuran-7-ol
    6.
    发明授权
    Process for preparing 2,3-dihydro-2,2-dimethylbenzofuran-7-ol 失效
    制备2,3-二氢-2,2-二甲基苯并呋喃-7-醇的方法

    公开(公告)号：US4542229A

    公开(公告)日：1985-09-17

    申请号：US483612

    申请日：1983-04-11

    申请人： Paolo Maggioni ,  Francesco Minisci ,  Mariano Correale

    发明人： Paolo Maggioni ,  Francesco Minisci ,  Mariano Correale

    IPC分类号： C07D307/79 ,  B01J27/00 ,  B01J31/00 ,  B01J31/02 ,  B01J31/18 ,  C07B61/00 ,  C07C41/16 ,  C07C43/23 ,  C07D307/86

    CPC分类号： C07C41/16 ,  C07D307/86

    摘要： A process is described for preparing 2,3-dihydro-2,2-dimethylbenzofuran-7-ol (I), which is a useful intermediary in the preparation of Carbofuran, a known multi-functional insecticide.The process consists essentially of reacting the pyrocatechol and a methallylhalide in an inert organic solvent in the presence of a solid inorganic base and a suitable catalyst, to obtain o.methallyloxyphenol with high conversion and high selectivity; this product is thermally transposed to o.methallylpyrocatechol, which is finally cyclized to the product (I) by heterogeneous catalysis in the presence of solid acid catalysts.All stages of the process can be carried out in a single reaction medium, without separating intermediate products.

    摘要翻译： 描述了制备2,3-二氢-2,2-二甲基苯并呋喃-7-醇（I）的方法，其是制备已知多功能杀虫剂的呋喃丹的有用中间体。 该方法主要包括在固体无机碱和合适的催化剂存在下，使邻苯二酚与甲代烯丙基胺在惰性有机溶剂中反应，得到高转化率和高选择性的甲基丙烯酰氧基苯酚; 该产物热转移到甲基丙烯酰基邻苯二酚，其在固体酸催化剂存在下最终通过非均相催化环化成产物（I）。 该方法的所有阶段都可以在单个反应介质中进行，而不分离中间产物。

    Process for the production of certain 2,3-dihydro-benzofuran derivatives
    8.
    发明授权
    Process for the production of certain 2,3-dihydro-benzofuran derivatives 失效
    制备某些2,3-二氢 - 苯并呋喃衍生物的方法

    公开(公告)号：US4816592A

    公开(公告)日：1989-03-28

    申请号：US575544

    申请日：1984-01-31

    申请人： Paolo Maggioni ,  Francesco Minisci ,  Mariano Correale

    发明人： Paolo Maggioni ,  Francesco Minisci ,  Mariano Correale

    IPC分类号： B01J29/06 ,  B01J31/00 ,  B01J31/04 ,  B01J31/38 ,  C07B61/00 ,  C07D307/86

    CPC分类号： C07D307/86

    摘要： A process for the production of benzofuran derivatives having the general formula, ##STR1## wherein R is alkyl, in particular of 2,3-dihydro-2,2-dimethyl benzofuran-7-ol, starting from pyrocatechol ethers in one step operation.The process essentially consists of heating a solution of pyrocatechol ether in an inert organic solvent in the presence of a catalyst comprising metals of 3.degree. and 4.degree. group of the Periodic System in form of carboxylates or of modified zeolites.The products are known intermediates for the production of insecticides.

    摘要翻译： 其中R为烷基，特别是2,3-二氢-2,2-二甲基苯并呋喃-7-醇的苯并呋喃衍生物的制备方法，其一步操作由邻苯二酚醚开始制备。 该方法主要包括在含有羧酸盐或改性沸石形式的定期系统3和4的金属的催化剂存在下，将惰性有机溶剂中的邻苯二酚醚溶液加热。 该产品是用于生产杀虫剂的已知中间体。

    Process for the synthesis of o-isopropoxyphenol
    9.
    发明授权
    Process for the synthesis of o-isopropoxyphenol 失效
    合成邻异丙氧基苯酚的方法

    公开(公告)号：US4599461A

    公开(公告)日：1986-07-08

    申请号：US690120

    申请日：1985-01-10

    申请人： Paolo Maggioni ,  Francesco Minisci ,  Mariano Correale

    发明人： Paolo Maggioni ,  Francesco Minisci ,  Mariano Correale

    IPC分类号： C07C41/01 ,  B01J31/00 ,  C07B61/00 ,  C07C41/00 ,  C07C41/16 ,  C07C43/23 ,  C07C67/00

    CPC分类号： C07C41/16

    摘要： A process for preparing o-isopropoxyphenol (I) by means of the reaction: ##STR1## in which X is a halogen atom and in which the pyrocatechol (II) is reacted with the isopropyl halide (III) in the presence of an alkaline base in the solid state and of a solid-liquid phase transfer catalyst, in a reaction medium constituted by one or more organic solvents.The catalyst is constituted by a quaternary ammonium or phosphonium salt.The reaction is conducted in a nitrogen atmosphere, at atmospheric pressure, under agitation, at a temperature of preferably between 50.degree. C. and 130.degree. C.

    摘要翻译： 通过以下反应制备邻异丙氧基苯酚（I）的方法：其中X是卤素原子，其中邻苯二酚（II）与异丙基卤化物（III）在碱性碱存在下反应 在固体状态和固相 - 液相转移催化剂的反应介质中，由一种或多种有机溶剂构成。 催化剂由季铵盐或鏻盐构成。 反应在氮气气氛中，在大气压下，在搅拌下，优选在50℃至130℃的温度下进行。