摘要:
A process for preparing a fluorine-containing dicarbonyl compound of the formula: R.sup.1 COCFR.sup.2 COR.sup.3 in which R.sup.1 is a hydrogen atom, or a substituted or unsubstituted alkyl or aryl group; R.sup.2 is a hydrogen atom, a halogen atom, or a substituted or unsubstituted alkyl or aryl group; and R.sup.3 is a hydrogen atom, or a substituted or unsubstituted alkyl, aryl, alkoxy or aryloxy group, provided that at least two of R.sup.1, R.sup.2 and R.sup.3 may together form a part of a cyclic structure with or without a hetero atom, by reacting a dicarbonyl compound of the formula: R.sup.1 COCHR.sup.2 COR.sup.3 in which R.sup.1, R.sup.2 and R.sup.3 are the same as defined above with fluorine (F.sub.2) in at least one solvent selected from the group consisting of halogenated hydrocarbons having 1 to 5 carbon atoms and nitrile compounds, or in a solvent in the presence of a salt, or an acid having pKa of 6 or less.By the above process, the fluorine-containing dicarbonyl compound is industrially prepared in a high yield.
摘要:
2,2,6,6-Tetrachloro(or tetrabromo)cyclohexanone is prepared by reacting in the liquid phase chlorine or bromine with a cyclohexanone compound of formula ##STR1## where Y is hydrogen or chlorine (to produce the tetrachloro compound) or hydrogen or bromine (to produce the tetrabromo compound) in the presence as catalyst of an organophosphorus compound of formula ##STR2## where Z is chlorine or bromine; n is 0 or 1; and when n is 0, m is 0 or 2, R.sup.1 is alkyl or phenyl, and R.sup.2 and R.sup.3 are hydrogen, alkyl or phenyl; and when n is 1, m is 0, and R.sup.1, R.sup.2 and R.sup.3 are the same and each is ##STR3## alkyl or phenyl, or R.sup.1 is hydrogen and R.sup.2 and R.sup.3 are alkyl or phenyl;or a salt thereof.Each alkyl is of 1-10 carbon atoms.
摘要:
Substituted cyclohexanones of the formula ##STR1## where R.sup.1 to R.sup.5 are as defined in the description, can be obtained by catalytic hydrogenation of phenols of the formula ##STR2## where R.sup.1 to R.sup.5 are as defined in the description.The reaction is carried out at from 20.degree. to 250.degree. C., from 1 to 200 bar and in an ether as solvent. If desired, an alkaline alkali metal, alkaline earth metal or ammonium compound is used as additive.
摘要:
The present invention relates to new fluorinated hexane compounds corresponding to the following general formula (II): ##STR1## in which X'.sub.2, X'.sub.3 and X'.sub.4 are the same or different, and denote a halogen or a pseudohalogen, preferably a halogen, more preferably chlorine and fluorine, with the condition that, when R.sub.1 is hydroxyl, cyano, amido, imido, ethoxy, benzyloxy, cyclohexyloxy and tert-butoxy, not all the halogens can simultaneously be chlorine and R.sub.4, R.sub.3 and R.sub.5 are simultaneously equal to H;R.sub.1 denotes a hydrogen, a hydrocarbon chain such as an alkyl chain, alkoxy, cycloalkyl ether, an aromatic group, aromatic ether or an alkoxy, carbonyl, carboxyl or acyloxy, cyano, amido, imido or hydroxyl group;R.sub.4 denotes a hydrogen, a fluorine atom, a hydrocarbon chain such as, for example, an alkyl chain, an aromatic group or a carbonyl, carboxyl or carboxamide group or else a radical joined to the hexane ring by a chalcogen or by an element of Group V, preferably of the first Period, such as an amido, alkoxy or acyloxy group;in which the radicals R.sub.3 and R.sub.5, which are different or preferably the same, denote a fluorine, or preferably hydrogen, atom or also a hydrocarbon chain as defined above in the case of R.sub.4.
摘要翻译:本发明涉及对应于以下通式(II)的新的氟化己烷化合物:其中X'2,X'3和X'4相同或不同,并且表示卤素或假卤素,优选 卤素,更优选氯和氟,条件是当R1是羟基,氰基,酰胺基,亚氨基,乙氧基,苄氧基,环己氧基和叔丁氧基时,不是所有的卤素都可以同时是氯,R4,R3和R5是 同时等于H; R 1表示氢,烃链如烷基链,烷氧基,环烷基醚,芳族基团,芳族醚或烷氧基,羰基,羧基或酰氧基,氰基,酰胺基,亚氨基或羟基; R4表示氢,氟原子,烃链,例如烷基链,芳族基团或羰基,羧基或羧酰胺基团,或者由硫属化合物连接到己烷环上的基团,或者由 优选第一阶段的V族如酰氨基,烷氧基或酰氧基; 其中不同或优选相同的基团R3和R5表示在R4的情况下如上所定义的氟或优选氢原子或烃链。
摘要:
The present invention provides a process for preparing a 1,1-disubstituted ethylene derivative of the formula ##STR1## which comprises reacting lead with a carbinol derivative of the formula ##STR2## wherein R.sup.1, R.sup.2, R.sup.3, X, Y, m and n are defined in the specification. The reaction is conducted more advantageously in the presence of a metal having higher ionization tendency than lead.
摘要:
Two new organic compounds are disclosed, perfluorocyclohexane-1,4-dione and perfluorocyclohexene-1,4-dione, which are obtained concurrently or alternatively by reacting fluoranil with substantially pure anhydrous cobalt trifluoride. These compounds are clear, colorless liquids which are useful as monomers in the synthesis of thermally stable elastomeric polymers. Also disclosed is the dihydrate of said perfluorocyclohexane-1,4-dione, namely, octafluoro-1,1,4,4-cyclohexanetetraol. Another aspect of this invention is a series of polyethers formed by reacting said perfluorocyclohexane-1,4-dione with cesium fluoride and a cyclic or noncyclic aliphatic perhaloalkene having from 2 to 12 carbon atoms and a fluorine atom on at least each of the carbon atoms connected by the double bond, said polymer having as a repeating unit ##SPC1##WhereinR is a divalent radical selected from the group consisting of ##EQU1## WHEREIN X is a halogen selected from the group consisting of fluorine, chlorine, bromine, iodine, or any stable combination thereof within the same molecule;n is an integer of from 1 to 4;y is an integer of from 0 to 10; andZ is an integer of from 0 to (10-y).When of sufficiently high molecular weight or when lightly cross-linked, these polymers are elastomers having high thermal stability.