专利号:US-5637757-A 优先权日:1995-04-11 标 题 :One-pot synthesis of ring-brominated benzoate compounds 发明人:HILL JOHN E; FAVSTRITSKY NICOLAI A; MAMUZIC RASTKO I; BHATTACHARYA BHABATOSH 权利人:GREAT LAKES CHEMICAL CORP 摘要:A method of preparing tetrabromobenzoate compounds from tetrabromophthalic anhydride by reacting tetrabromophthalic anhydride with alcohol in the presence of a decarboxylation catalyst. The reaction may be carried out in an excess of alcohol, or with a near stoichiometric amount of alcohol by performing the reaction in an inert solvent.
专利号:WO-9632368-A1 优先权日:1995-04-11 标题:One-pot synthesis of ring-brominated benzoate compounds
专利号:EP-0825974-A1 优先权日:1995-04-11 标 题 :One-pot synthesis of ring-brominated benzoate compounds
专利号:CA-2217760-A1 优先权日:1995-04-11 标题:One-pot synthesis of ring-brominated benzoate compounds
专利号:EP-0825974-A4 优先权日:1995-04-11 标题:SYNTHESIS IN A SINGLE CONTAINER OF BROMINATED BENZOATE CYCLIC COMPOUNDS
专利号:US-5455361-A 优先权日:1992-09-17 标 题 :Process for preparing ketene acetals 发明人:FLEISCHMANN GERALD; ECK HERBERT; PETERSEN HERMANN; PFLAUM SIEGFRIED 权利人:WACKER CHEMIE GMBH 摘要:The invention relates to a process for preparing ketene acetals by dehydrohalogenation of 2-haloaldehyde acetals. If the 2-haloaldehyde acetal is open chain, the dehydrohalogenation is carried out in the presence of an alkali metal hydroxide or alkaline earth metal hydroxide and a phase transfer catalyst and/or a secondary or tertiary alcohol or a secondary or tertiary diol. If the 2-haloaldehyde acetals is cyclic, the dehydrohalogenation is carried out in the presence of an alkali metal hydroxide or alkaline earth metal hydroxide and a phase transfer catalyst and with or without a secondary or tertiary alcohol or a secondary or tertiary diol, or carried out in the presence of an alkali metal hydroxide or alkaline earth metal hydroxide and a secondary or tertiary diol. The ketene acetals which can be prepared by the process of the invention serve as intermediates in organic synthesis and are suitable as monomers or comonomers in free radical polymerization for the production of biodegradable plastics.