Non-volatile material
    72.
    发明授权
    Non-volatile material 失效
    非挥发性物质

    公开(公告)号:US5506294A

    公开(公告)日:1996-04-09

    申请号:US393913

    申请日:1995-02-24

    申请人: David Westerhoff

    发明人: David Westerhoff

    摘要: A non-volatile compound useful as a solvent and a method of manufacturing the compound. The compound is formed from heating a combination of a lactide and a drying oil which has conjugated double bonds. The compound is particularly useful as a resin solvent for use with coatings, paints and printing inks. In addition, it can be used as a compatibilizing agent.

    摘要翻译: 可用作溶剂的非挥发性化合物和制备该化合物的方法。 通过加热具有共轭双键的丙交酯和干性油的组合形成化合物。 该化合物特别可用作用于涂料,油漆和印刷油墨的树脂溶剂。 另外可以作为相容剂使用。

    Method of preparing alpha-arylalkanoic esters
    78.
    发明授权
    Method of preparing alpha-arylalkanoic esters 失效
    制备α-芳基链烷酸酯的方法

    公开(公告)号:US4843169A

    公开(公告)日:1989-06-27

    申请号:US888539

    申请日:1986-07-21

    申请人: Robert C. Chapman

    发明人: Robert C. Chapman

    CPC分类号: C07C67/42 C07C69/612

    摘要: Alpha-arylalkanoic esters are prepared by reacting a trivalent iodine compound of the formula ##STR1## wherein Ar is an aromatic hydrogen and X and Y each represent a group which can be removed as an anion, with a carbonyl compound of the formula ##STR2## where Ar.sup.1 is an aromatic hydrocarbon, R is a hydrogen atom or an alkyl group, and R.sup.1 is a hydrogen atom or an alkyl group, in the presence of an orthocarboxylic ester having the general formula ZC(OR.sup.2).sub.3, wherein R.sup.2 is an alkyl group and Z is a hydrogen atom or an alkyl group; the reaction being carried out in the presence of sulfuric acid in an amount from about 0.2 to about 0.8 mole per mole of the carbonyl compound.

    摘要翻译: α-芳基链烷酸酯通过使下式的化合物:其中Ar是芳香族氢的三价碘化合物和X和Y各自表示可作为阴离子去除的基团, 其中Ar 1为芳族烃,R为氢原子或烷基,R 1为氢原子或烷基,在具有通式ZC(OR2)3的原羧酸存在下,其中R2为烷基 基团,Z为氢原子或烷基; 反应在硫酸存在下进行,其量为每摩尔羰基化合物约0.2至约0.8摩尔。

    Process and intermediates for beta-lactam antibiotics
    80.
    发明授权
    Process and intermediates for beta-lactam antibiotics 失效
    β-内酰胺抗生素的工艺和中间体

    公开(公告)号:US4775752A

    公开(公告)日:1988-10-04

    申请号:US99032

    申请日:1987-09-21

    摘要: A process for preparing a .beta.-keto ester of the formula ##STR1## is provided which comprises cycloaddition of an (S)-4-aryloxazolidin-2-one-3-ylacetyl halide with an imine formed with a benzyl amine and an m-alkoxycinnamaldehyde to form the azetidinone ##STR2## hydrogenation of the azetidinone to the 4-[2-(m-alkoxyphenyl)-ethyl]substituted azetidinone; reduction of the hydrogenation product with Li-NH.sub.3 and t-butyl alcohol to form the 3-aminoazetidinone. ##STR3## and N-acylation of the 3-aminoazetidinone followed by ozonolysis of the cyclodiene group; wherein, e.g. alk, is methyl, Ar is phenyl and R.sub.1 is phenoxymethyl.

    摘要翻译: 提供了制备式“β”的β-酮酯的方法,其包括(S)-4-芳基恶唑烷-2-酮-3-基乙酰卤与由苄基胺形成的亚胺的环加成反应, 烷氧基肉桂醛形成氮杂环丁酮将氮杂环丁酮氢化成4- [2-(间 - 烷氧基苯基) - 乙基]取代的氮杂环丁酮; 用Li-NH 3和叔丁醇还原氢化产物以形成3-氨基氮杂环丁酮。 3-氨基氮杂环丁酮的N-酰化反应,然后进行环二烯基的臭氧分解; 其中,例如 烷基是甲基,Ar是苯基,R 1是苯氧基甲基。