Epimerization of 2- or 4- substituted cyclohexanecarboxylic acids
The present invention relates to a new method for obtaining a purity of about 93% to 100% of the trans form of 2- or 4-substituted cyclohexanecarboxylic acid or reactive derivatives thereof from the cis form or a mixture of the cis and trans forms by a single step, particularly, to a method for obtaining a purity of substantially 100% of the trans form of 4-substituted cyclohexanecarboxylic acid.
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(2008/06/13)
Fragmentation of the Chain in the Mass Spectra of the Pyrrolidides of Alkylcyclohexanecarboxylic Acids
The electron impact mass spectra of the pyrrolidides of both the cis- and trans-octylcyclohexanecarboxylic acids show the structure of the aliphatic chain, despite the steric hindrance of a direct H transfer from the chain to the functional group.
Vetter, W.,Meister, W.
p. 85 - 90
(2007/10/02)
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