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method for isomeriser selectivement trans - 2 - pentene cis-2 - pentene nitrile nitrile in a solution of the pentene isomeres nitrile
method for isomeriser selectivement trans - 2 - pentene cis-2 - pentene nitrile nitrile in a solution of the pentene isomeres nitrile
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机译:戊烯异构体腈溶液中反式-2-戊烯顺2-戊烯腈的异构体选择方法。
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摘要
Cis- and trans-2-pentenenitriles in a mixture of pentenenitriles are brought closer to their equilibrium ratio by contacting the mixture with a Lewis acid/Lewis base catalyst composition. By this process trans-2-pentenenitrile can be removed from a mixture containing mainly 3-pentenenitrile by isomerizing the trans-2-pentenenitrile to cis-2-pentenenitrile and removing the more volatile cis isomer by fractional distillation. There is substantially no isomerization of 3-pentenenitrile to cis- or trans-2-pentenenitrile.
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