CAS: 38932-80-8; N,N,N,N-Tetrabutylammonium Tribromide

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专利信息

专利号:US-6235871-B1
优先权日:1997-12-03
标题:Synthesis of oligoarylamines, and uses and reagents related thereto
发明人：SINGER ROBERT A; SADIGHI JOSEPH P; BUCHWALD STEPHEN L; MACKEWITZ THOMAS
权利人:MASSACHUSETTS INST TECHNOLOGY
摘要:The transition metal-catalyzed amination of aryl halides, in conjunction with an orthogonal protective group scheme, forms the basis of two routes to oligoaniline precursors. The oligoaniline precursors are soluble in a variety of common organic solvents, and are easily converted to the deprotected oligoanilines. The method allows the preparation of oligoanilines of even or odd chain lengths, and the incorporation of a variety of functional groups into the oligomers. Polyanilines of low polydispersity can also be prepared by this method.

专利号:US-4087465-A
优先权日:1976-02-25
标题:Process for the preparation of halogeno-acetals from enoxysilanes
发明人：DECOR JEAN-PIERRE
权利人:RHONE POULENC IND
摘要:Halogeno-acetals of ethylenic aldehydes are made by reaction of a corresponding enoxysilane compound with a halogen cation and an alcohol. The products are useful inter alia in the synthesis of retinal and other unsaturated aldehydes.

专利号:US-5292897-A
优先权日:1989-12-01
标 题:Process for preparing halo acetals from enamines
发明人：CHABARDES PIERRE; DUHAMEL LUCETTE; DUHAMEL PIERRE; GUILLEMONT JEROME; POIRIER JEAN-MARIE
权利人:RHONE POULENC NUTRITION ANIMAL
摘要:The present invention relates to a process for preparing halo acetals of ethylenic aldehydes by reaction of a halogen cation with enamine followed by a hydrolysis and reaction with an alcohol, a glycol or an orthoformate. These halo acetals are used as intermediate for the synthesis of vitamins A and E. n It also relates to a new compound of formula (IV), ##STR1## to a process for preparing it from halo acetals of ethylenic aldehydes by reaction with triethyl phosphate, and to its use for the preparation of retinal by reaction with β-ionylideneacetaldehyde.

专利号:CA-2971020-A1
优先权日:2014-12-19
标题:Novel compounds, synthesis method thereof and use of same in medicine and in cosmetics

专利号:RU-2128644-C1
优先权日:1993-12-27
标 题:Derivatives of anthranilic acid or their pharmacologically acceptable salts, intermediate compounds used for their synthesis and drug