Methods for preparation and use of strong base catalysts

Details Methods for preparation and use of strong base catalysts Methods for preparation and use of strong base catalysts

C - Chemistry, Metallurgy

07

C

C07C 57/12 (2006.01) C07C 51/353 (2006.01) C08F 4/00 (2006.01) C11C 3/14 (2006.01)

Patent

CA 2620879

Methods for preparation of a unique superbase catalyst consisting of mixture of polyether alcohol and base in which a polyether alcohol superbase is produced by the removal of water or alcohol at elevated temperatures to form a polyether alcohol alkoxide. The superbase catalyst is useful in, but not limited to, quantitative isomerization of alkyl esters of vegetable oils containing interrupted double bond systems to yield esters with conjugated double bond systems, alkylations, arylations, acylations, aminations, condensations, eliminations, isomerizations, rearrangements, and Wittig reactions.

L'invention concerne des procédés de préparation d'un catalyseur de superbase unique renfermant un mélange d'alcool de polyéther et une base dans laquelle une superbase d'alcool de polyéther est produite par élimination d'eau ou d'alcool à des températures élevées de manière à former un alkoxyde d'alcool de polyéther. Ce catalyseur de superbase est utilisé notamment mais non seulement dans une isomérisation quantitative des esters d'alkyle d'huiles végétales contenant des systèmes à liaison double interrompus afin de produire des esters avec des systèmes à liaison double conjugués, des alkylations, des arylations, des acylations, des aminations, des condensations, des éliminations, des isomérisations, des redispositions et des réactions de Wittig.

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