Intermediates in the preparation of
2,2-dimethyl-3-aryl-cyclopropanecarboxylic acids and esters
    21.
    发明授权
    Intermediates in the preparation of 2,2-dimethyl-3-aryl-cyclopropanecarboxylic acids and esters 失效
    中间体制备2,2-二甲基-3-芳基 - 环丙烷羧酸和酯

    公开(公告)号:US4681952A

    公开(公告)日:1987-07-21

    申请号:US669182

    申请日:1984-11-07

    摘要: A process for the preparation of 2,2-dimethyl-3-arylcyclopropanecarboxylic acid or ester of the formula ##STR1## in which Ar is naphthyl or the radical ##STR2## R.sup.1 is H or C.sub.1 -C.sub.4 -alkyl, Z is oxygen, sulphur, or 1,2-ethenediyl, andR.sup.2 represents hydrogen, halogen, cyano, nitro or trialkylsilyl or a radical, which is optionally substituted by halogen, from the series comprising alkyl, cycloalkyl, alkenyl, alkoxy, alkylenedioxy, alkylthio, alkylsulphinyl, alkylsulphonyl, dialkylamino, phenyl and phenoxy,comprising reacting a 1-aryl-1-halogeno-2,2-dimethyl-3-butanone of the formula ##STR3## in which X.sup.1 is chlorine or bromine, with a base in the presence of a diluent at a temperature between about -20.degree. and +150.degree. C., thereby to form a 2,2-dimethyl-3-arylcyclobutanone of the formula ##STR4## and reacting such 2,2-dimethyl-3-arylcyclobutanone with chlorine or bromine in the presence of an inert diluent at a temperature between about -30.degree. and +50.degree. C., reacting such 2,2-dimethyl-3-arylcyclobutanone with chlorine or bromine in the presence of an inert diluent at a temperature between about -30.degree. and +150.degree. C., thereby to form a 2,2-dimethyl-3-aryl-4-halogenocyclobutanone of the formula ##STR5## and reacting such 2,2-dimethyl-3-aryl-4-halogenocyclobutanone with an alkali metal alcoholate in the presence of an organic solvent or with an alkali metal or alkaline earth metal hydroxide or carbonate in the presence of water and an organic solvent, at a temperature between about -20.degree. and +100.degree. C. The various intermediates are new and the end product is a known intermediate for known insecticides.

    摘要翻译: 制备2,2-二甲基-3-芳基环丙烷羧酸或其中Ar为萘基或R 1为R 1的式“IMAGE”的酯的方法为H或C 1 -C 4 - 烷基,Z为氧,硫 或1,2-乙烯二基,R 2代表氢,卤素,氰基,硝基或三烷基甲硅烷基或任选被卤素取代的基团,包括烷基,环烷基,烯基,烷氧基,亚烷基二氧基,烷硫基,烷基亚磺酰基,烷基磺酰基 ,二烷基氨基,苯基和苯氧基,包括使X1为氯或溴的式“IMAGE”的1-芳基-1-卤代-2,2-二甲基-3-丁酮与碱在稀释剂存在下反应 在约-20℃至+ 150℃之间的温度下,由此形成下式的2,2-二甲基-3-芳基环丁酮,并使这种2,2-二甲基-3-芳基环丁酮与氯或溴反应 在惰性稀释剂存在下,在-30℃〜+ 50℃的温度下,使这样的2,2-二甲基-3-芳基 氯丁酮与氯或溴在惰性稀释剂存在下,在约-30℃至+ 150℃之间的温度下反应,由此形成下式的“2,2-二甲基-3-芳基-4-卤代环丁酮” 并在有机溶剂或碱金属或碱土金属氢氧化物或碳酸盐存在下,在水和有机溶剂的存在下,使这种2,2-二甲基-3-芳基-4-卤代环丁酮与碱金属醇盐反应, 在约-20℃至+ 100℃之间的温度下。各种中间体是新的,最终产物是已知杀虫剂的已知中间体。

    Aliphatic-cycloaliphatic diisocyanates
    23.
    发明授权
    Aliphatic-cycloaliphatic diisocyanates 失效
    脂肪族 - 脂环族二异氰酸酯

    公开(公告)号:US4613685A

    公开(公告)日:1986-09-23

    申请号:US691103

    申请日:1985-01-14

    摘要: The present invention relates to diisocyanates having an isocyanate content of from about 20 to 50% by weight, optionally in the form of isomeric mixtures, characterized in that, in addition to containing a sterically unhindered isocyanate group attached to a primary aliphatic carbon atom, they contain a sterically hindered isocyanate group attached to a tertiary carbon atom which forms part of a cycloaliphatic ring system.The invention also relates to the use of the new diisocyanates, optionally blocked with blocking agents for isocyanate groups, as isocyanate component for the preparation of polyurethanes.

    摘要翻译: 本发明涉及异氰酸酯含量为约20至50重量%,任选地为异构混合物形式的二异氰酸酯,其特征在于,除了含有连接到伯脂肪族碳原子上的空间未阻碍的异氰酸酯基之外,它们 含有连接到形成脂环族环系的一部分的叔碳原子上的空间位阻异氰酸酯基团。 本发明还涉及使用任选用封端剂封端的异氰酸酯二异氰酸酯作为制备聚氨酯的异氰酸酯组分的用途。

    Preparation of 2-(2-2-dimethyl-3-buten-1-yl)-2-oxaxolines
    24.
    发明授权
    Preparation of 2-(2-2-dimethyl-3-buten-1-yl)-2-oxaxolines 失效
    2-(2-2-二甲基-3-丁烯-1-基)-2-恶唑啉的制备

    公开(公告)号:US4426529A

    公开(公告)日:1984-01-17

    申请号:US342276

    申请日:1982-01-25

    CPC分类号: C07D263/04 C07D263/12

    摘要: A process comprising reacting a 2-methyloxazoline with a 3-methyl-2-buten-1-yl derivative of the formula ##STR1## in which X is halide, sulphonate or phosphate thereby to produce a 2-methyl-3-(3-methyl-2-butenyl)-2-oxazolinium salt of the formula ##STR2## reacting the oxazolinium salt with an alcoholate of the formulaR.sup.5 --O--M (V)in which M is one equivalent of an alkali metal or alkaline earth metal cation, to produce an oxazolidine of the formula ##STR3## pyrolyzing the oxazolidine to produce a 2-methyl-3-(3-methyl-2-butenyl)-oxazolindine of the formula ##STR4## and heating the 2-methylene-3-(3-methyl-2-butenyl)-oxazolidine to produce a 2-(2,2-dimethyl-3-buten-1-yl)-2-oxazoline.

    摘要翻译: 一种方法,包括使2-甲基恶唑啉与式(VII)的3-甲基-2-丁烯-1-基衍生物反应,其中X为卤化物,磺酸盐或磷酸盐,从而产生2-甲基-3- (Ⅳ)的(3-甲基-2-丁烯基)-2-恶唑啉盐(Ⅳ)使恶唑啉盐与式为R5-OM(Ⅴ)的醇化物反应,其中M为1当量的碱金属或 碱土金属阳离子,以产生式(III)的恶唑烷,式(III)热解恶唑烷以产生式“IMAGE”的2-甲基-3-(3-甲基-2-丁烯基) - 恶唑啉并加热 2-亚甲基-3-(3-甲基-2-丁烯基) - 恶唑烷,得到2-(2,2-二甲基-3-丁烯-1-基)-2-恶唑啉。

    Preparation of nitriles from formamides
    25.
    发明授权
    Preparation of nitriles from formamides 失效
    从甲酰胺制备腈

    公开(公告)号:US4419297A

    公开(公告)日:1983-12-06

    申请号:US340902

    申请日:1982-01-20

    CPC分类号: C07C253/20

    摘要: Aliphatic, araliphatic or aromatic nitriles of the formula R--CN are obtained by reacting N-substituted formamides of the formula R--NHCHO with at least the stoichiometric quantity of an acylating agent (generally a carboxylic acid anhydride, such as acetic anhydride, or ketene) in the gas phase at temperatures above 250.degree. C., without using a catalyst. The process is especially useful in the preparation of nitriles wherein the connecting carbon of R is a tertiary carbon atom. The nitriles are important intermediate products, for example for the preparation of herbicides, surface-active agents and anti-corrosive agents.

    摘要翻译: 式R-CN的脂族,芳脂族或芳族腈通过使式R-NHCHO的N-取代甲酰胺与至少化学计量量的酰化剂(通常为羧酸酐,例如乙酸酐或乙烯酮)反应而获得 )在高于250℃的温度下在气相中,而不使用催化剂。 该方法在制备其中R的连接碳是叔碳原子的腈中是特别有用的。 腈是重要的中间产物,例如用于制备除草剂,表面活性剂和抗腐蚀剂。

    Process for the preparation of 1,1-dihalo-4-methyl-1,3-pentadiene
compounds
    26.
    发明授权
    Process for the preparation of 1,1-dihalo-4-methyl-1,3-pentadiene compounds 失效
    制备1,1-二卤代-4-甲基-1,3-戊二烯化合物的方法

    公开(公告)号:US4191712A

    公开(公告)日:1980-03-04

    申请号:US964216

    申请日:1978-11-27

    CPC分类号: C07C17/361

    摘要: Process for making 1,1-dihalo-4-methyl-1,3-pentadiene compounds which process comprises reacting a 2-2-dimethyl-3,5,5,5-tetrahelogenopent-1-yl derivative of the formula ##STR1## in which Hal.sup.1 is defined as above,Hal.sup.2 is halogen, andR is hydrogen or alkanoyl of up to 5 carbon atoms with a substance having a basic reaction in a temperature range from 20.degree. to 160.degree. C. Certain intermediates produced in such process can also be used as the initial starting material.

    摘要翻译: 制备1,1-二卤代-4-甲基-1,3-戊二烯化合物的方法包括使下式的图像形式的2-二甲基-3,5,5,5-四脱木酸-1-基衍生物: (I),其中Hal1如上所定义,Hal2是卤素,R是氢或具有至多5个碳原子的烷酰基,物质在20至160℃的温度范围内具有碱性反应。产生某些中间产物 在这种过程中也可以用作初始起始材料。

    Process for the production of autocrosslinkable polymers containing
n-alkoxymethyl groups
    29.
    发明授权
    Process for the production of autocrosslinkable polymers containing n-alkoxymethyl groups 失效
    制备含有正烷氧基甲基的自交联聚合物的方法

    公开(公告)号:US4064110A

    公开(公告)日:1977-12-20

    申请号:US665289

    申请日:1976-03-09

    摘要: Storable, autocrosslinkable polymers containing N-alkoxymethyl groups are obtained by reacting 5-alkoxymethyl-1,3,4-dioxazol-2-ones with a polymer having an average molecular weight above 600 and an average of more than one Zerewitinoff-active hydrogen atom in the molecule in the presence of a catalytic quantity of at least an alkali metal salt. The new catalysts allow to carry out the reaction at a temperature in the range from 50.degree. to 110.degree. C and guarantee a complete reaction of the reactants into uncrosslinked but autocrosslinkable light-stable end products.

    摘要翻译: 含有N-烷氧基甲基的可存储的自交联聚合物是通过使5-烷氧基甲基-1,3,4-二恶唑-2-酮与平均分子量高于600的聚合物和平均多于一个Zerewitinoff-活性氢原子 在分子中存在催化量的至少一种碱金属盐。 新的催化剂允许在50℃至110℃的温度下进行反应,并保证反应物完全反应成未交联但可自交联的光稳定的最终产物。