Synthesis of cyclic compounds
    3.
    发明授权
    Synthesis of cyclic compounds 失效
    环状化合物的合成

    公开(公告)号:US06958145B2

    公开(公告)日:2005-10-25

    申请号:US10312155

    申请日:2001-06-28

    摘要: A method for the preparation of a compound of formula (II) wherein R1 and R2 are independently H, alkyl, alkoxy, oxoalkyl, alkenyl, aryl or arylalkyl whether unsubstituted or substituted, optionally interrupted by one or more hetero atoms, straight chain or branched chain, hydrophilic, hydrophobic or fluorophilic; R3, R4, R5 and R6 are independently or all hydrogen or halogen; provided that at least two of the R3, R4, R5 and R6 are halogens.

    摘要翻译: 制备式(II)化合物的方法,其中R 1和R 2独立地是H,烷基,烷氧基,氧代烷基,烯基,芳基或芳基烷基,无论是未取代的 或取代的,任选被一个或多个杂原子间隔的直链或支链,亲水的,疏水的或富含荧光的; R 3,R 4,R 5和R 6是独立地或全部是氢或卤素; 条件是R 3,R 4,R 5和R 6中的至少两个是卤素。

    Process for preparing 2,2-dichloroacetoacetyl chloride
    4.
    发明授权
    Process for preparing 2,2-dichloroacetoacetyl chloride 失效
    制备2,2-二氯乙酰乙酰氯的方法

    公开(公告)号:US4404149A

    公开(公告)日:1983-09-13

    申请号:US383935

    申请日:1982-06-01

    CPC分类号: C07C51/62

    摘要: 2,2-Dichloroacetoacetyl chloride having the formula: ##STR1## Process for producing 2,2-dichloroacetoacetyl chloride wherein acetyl chloride is reacted by means of a Lewis acid as a catalyst with chlorine at a temperature of 30.degree. to 60.degree. C. The mole ratio of acetyl chloride to the catalyst is from 1:0.005 to 1:0.5 and the mole ratio of acetyl chloride to the chlorine is from 1:0.1 to 1:1.5. The most preferred catalysts are aluminum chloride and aluminum bromide.

    摘要翻译: 具有下式的2,2-二氯乙酰乙酰氯:< IMAGE>用于制备2,2-二氯乙酰乙酰氯的方法,其中乙酰氯通过路易斯酸作为催化剂与氯在30℃至60℃的温度下反应。 乙酰氯与催化剂的摩尔比为1:0.1至1:0.5,乙酰氯与氯的摩尔比为1:0.1至1:1.5。 最优选的催化剂是氯化铝和溴化铝。

    Telomer products
    9.
    发明授权
    Telomer products 失效
    TELOMER产品

    公开(公告)号:US3775475A

    公开(公告)日:1973-11-27

    申请号:US3775475D

    申请日:1971-04-28

    申请人: SHELL OIL CO

    发明人: HOLM R MORRIS R HAYDEN J

    摘要: NOVEL LINEAR TELOMERS OF C4 ETHYLENICALLY UNSATURATED DICARBOXYLIC ACIDS OR DERIVATIVES THEREOF ARE PRODUCED BY TELOMERIZING A C4 ETHYLENICALLY UNSATURATED DICARBOXYLIC ACID OR DERIVATIVE THEREOF WITH CERTAIN ALKYL ESTER OF ALKYLENE CARBONATE REACTANT IN THE PRESENCE OF A FREERADICAL CATALYST. THE TELOMERS ARE CONVERTED BY SAPONIFICATION WITH ALKAKI METAL OR AMMONIUM HYDROXIDE SOLUTIONS TO SUBSTANTIALLY BIODEGRADABLE, WATER-SOLUBLE POLYCARBOXYLATE SALTS TERMINATED WITH AN HYDROXY-SUBSTITUTED ALKYL END GROUP. THE COMPOUNDS ARE USED AS DETERGENT BUILDERS.