CAS: 161337-67-3; Hafnium Trifluoromethanesulfonate

专利信息

专利号:WO-2017030685-A1
优先权日:2015-08-14
标题 :One-pot synthesis of anhydropentitol mono- and diethers
发明人：STENSRUD KENNETH
权利人:ARCHER DANIELS MIDLAND CO
摘要:A process for preparing anhydropentitol mono- and diethers from C 5 sugar alcohols is described. The process involves performing in a single reaction vessel consolidated reactions that a) cyclize dehydratively a linear C 5 sugar alcohol and b) etherify a resulting anhydropentitol. Each of the reactions is catalyzed by a very low amount of a water-tolerant Lewis acid catalyst relative to the starting sugar-alcohol. Depending on the reaction conditions, the synthesis method is efficient, selective and affords good yields of mono- and diethers. The anhydropentiol ethers can serve as renewable substitute precursors of petroleum incumbents for use in the making of surfactants and plasticizers.

专利号:WO-2017100402-A1
优先权日:2015-12-11
标 题 :One-pot synthesis of anhydropentitol esters from pentitols, catalyzed by water-tolerant lewis acids
发明人：STENSRUD KENNETH
权利人:ARCHER DANIELS MIDLAND CO
摘要:A procedure for preparing anhydropentitol mono, di, and tri esters is described. The process is performed in a single vessel and involves sequential dehydrative cyclization and carboxylic acid acylation steps. Each step is catalyzed by low loadings of a water-tolerant Lewis acid catalyst. The method of synthesis is efficacious and depending on the reaction condition, generates modest to high yields of the target mono-, di-, and triesters. The esters can be practical surrogates of incumbent petroleum materials of similar structure used for surfactants and plasticizers.

专利号:WO-2023247609-A1
优先权日:2022-06-22
标题 :Process for the preparation of cyclohomogeranates
发明人：SCHELWIES MATHIAS; BRUNNER BERNHARD; PELZER RALF; LIST BENJAMIN; TURBERG MATHIAS; MITSCHKE BENJAMIN; DAS SAYANTANI; DE CHANDRA KANTA
权利人:BASF SE; STUDIENGESELLSCHAFT KOHLE GGMBH
摘要:The present invention relates to a process for the preparation of cyclohomogeranates. The invention relates to the synthesis of cyclohomogeranates from well available esters of homogeranic acid in only one step. The cyclohomogeranates prepared according to the process of the present invention can be used in the fragrance industry as intermediates or the compounds can be used as such as aroma compound.

专利号:US-6657068-B2
优先权日:2002-03-22
标题:Liquid phase oxidation of halogenated ortho-xylenes
发明人：COLBORN ROBERT EDGAR; HALL DAVID BRUCE; KOCH PETER; OECKEL GERALD
权利人:GEN ELECTRIC
摘要:A method for the manufacture of halophthalic acid by liquid phase oxidation of halo-ortho-xylene is disclosed. The halophthalic acid may be dehydrated to form halophthalic anhydride which is useful in the synthesis of polyetherimide.

专利号:US-6649773-B2
优先权日:2002-03-22
标题:Method for the manufacture of halophthalic acids and anhydrides
发明人：COLBORN ROBERT EDGAR; HALL DAVID BRUCE; KOCH PETER; OECKEL GERALD
权利人:GEN ELECTRIC
摘要:A method for the manufacture of halophthalic acid by liquid phase oxidation of halo-ortho-xylene is disclosed. The halophthalic acid may be dehydrated to form halophthalic anhydride which is useful in the synthesis of polyetherimide.

专利号:US-6657067-B2
优先权日:2002-03-22
标题 :Method for the manufacture of chlorophthalic anhydride
发明人：COLBORN ROBERT EDGAR; HALL DAVID BRUCE; KOCH PETER; OECKEL GERALD
权利人:GEN ELECTRIC
摘要:A method for the manufacture of chlorophthalic acid by liquid phase oxidation of chloro-ortho-xylene is disclosed. The chlorophthalic acid may be dehydrated to form chlorophthalic anhydride which is useful in the synthesis of polyetherimide.