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Expired
Application number
GB36998/28A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Consortium fuer Elektrochemische Industrie GmbH
Original Assignee
Consortium fuer Elektrochemische Industrie GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
C07C17/25—Preparation of halogenated hydrocarbons by splitting-off hydrogen halides from halogenated hydrocarbons
Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
Y02P20/00—Technologies relating to chemical industry
Y02P20/10—Process efficiency
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Chemical & Material Sciences
(AREA)
Organic Chemistry
(AREA)
Organic Low-Molecular-Weight Compounds And Preparation Thereof
(AREA)
Abstract
302,321. Consortium fur Elektrochemische Industrie Ges. Dec. 14, 1927, [Convention date]. Trichlorethylene is obtained from acetylene tetrachloride at temperatures about 500‹ C., by passage of the vapour at such a high speed over large surfaces in a suitable reaction chamber that only part of the vapour is converted into trichlorethylene, the formation of by-products thus being avoided. The speed depends also upon the form of furnace, temperature, nature of catalyst &c. The heat contained in the unchanged vapour may be recovered by heat exchangers, and the incoming vapour may be preheated, even up to the reaction temperature. A cyclical process may be used, the trichlorethylene being separated by fractional condensation. Suitable contacts are pumice-stone, wood charcoal, active carbon and silica gel., while metallic oxides and salts may be employed as catalysts. Specification 23780/06 is referred to.
GB36998/28A1927-12-141928-12-14Improved manufacture of trichlorethylene
ExpiredGB302321A
(en)
A method for producing quinoline alkyl derivatives. The invention relates to a method for producing quinoline alkyl derivatives of the general formula where RI is alkyl; R2 is hydrogen or alkyl, and alkyl RI contains one carbon atom more than alkyl Rs, which are used in the chemical industry. Known methods for producing alkyl derivatives of quinoline by reacting anilines with carbonyl-containing compounds (for example, aldehydes, ketones) in the presence of various condensates , their and yush oxide, their agents require the use of hard-to-reach starting materials. The purpose of the invention — to improve the process technology — is achieved by the fact that a mixture of nitrobenzene and aliphatic alcohol of the general formula ROH, where R is Cz — Ce-alkyl, passed through an industrial vanadium catalyst (B-3) at 320–360 ° C, followed by isolation of the target product by known methods.5 Irimer 1. Synthesis of 2-methylquinoline (quinaldine). A mixture of 13 ml of nitrobenzene and 14 ml of ethyl alcohol is passed through a B-3 vanadium catalyst heated to 320 ° C, but partially activated by hydrogen for 1 hour at 350–380 ° C. An oily layer is separated from the catalyzate consisting of two layers, distilled, and 4.6 ml (35%) quinaldine are obtained, i.e. bale. 246-249 ° C, so pl. picra-15 and 191–192 ° C. Found,%: N 9.92; 10,13.CioHgN. Calculated,%: N 9.79. In Examples 2-5, tabulated, 20 experiments were carried out, as in Example 1, using in each case 13 ml of nitrobenzene and different amounts of alcohols and skips the reaction mixture is heated to a certain temperature vanadium catalyst B-3. 25 The results are shown in the table.