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Citation: YANG Yong-Zhong, GAO Ren-Xiao, LIU Hong, LI Qi-Gui, LIU Qian-Feng. A Novel Approach to the Synthesis of trans-4-(trans-4'-Propylcyclohexyl) cyclohexylcarboxylic Acid[J]. Chinese Journal of Applied Chemistry, ;2004, 21(9): 971-972. shu

A Novel Approach to the Synthesis of trans-4-(trans-4'-Propylcyclohexyl) cyclohexylcarboxylic Acid

1.
Xi'an Modern Chemistry Research Institute, Xi'an 710065

Corresponding author: YANG Yong-Zhong,
Received Date: 28 November 2003
Available Online: 16 March 2004

The isomeric mixtures containing trans and cis forms of 4-(trans-4'-propylcyclohexyl) cyclohexylcarboxylic acid (3HHA) was produced by hydrogenation of 4-(trans-4'-propylcyclohexyl) benzoic acid (3HPA) at 105℃ and 5 MPa using ruthenium/carbon as catalysts.The isomerization reaction was performed in the absence of solvent at 200℃ when the molar ratio of potassium hydroxide catalyst to 3HHA was 2.0 to 1.0.The product in a mass ratio of trans-4-(trans-4'-propylcyclohexyl) cyclohexylcarboxylic acid (trans-3HHA) to cis-4-4-(trans-4'-propylcyclohexyl) cyclohexylcarboxylic acid (cis-3HHA) of 98:2 was obtained.
- trans-(trans-propylcyclohexyl)cyclohexylcarboxylic acid,
- (trans-propylcyclohexyl) benzoic acid,
- isomerization
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