82575-70-0

Usage

Chemical Properties

Milky white liquid

Uses

Intermediates of Liquid Crystals

InChI:InChI=1/C17H32O/c1-2-3-4-5-14-6-8-15(9-7-14)16-10-12-17(18)13-11-16/h14-18H,2-13H2,1H3/t14-,15-,16?,17-

Upstream product

• 82575-69-7 4-(trans-4-n-pentylcyclohexyl)phenol 

Downstream Products

• 84868-02-0 4-(trans-4-n-pentylcyclohexyl)cyclohexanone 
• 71458-06-5 trans-4-propyl-1-(hydroxymethyl)cyclohexane 

Relevant academic research and scientific papers

Method for catalytically synthesizing 4-(trans-4-alkylcyclohexyl) cyclohexanone

The invention provides a method for catalytically synthesizing 4-(trans-4-alkylcyclohexyl) cyclohexanone, which comprises the following steps: by taking trans-4-alkylcyclohexyl phenol as a raw material, carrying out catalytic hydrogenation to obtain trans-4-(trans-4-alkylcyclohexyl) cyclohexanol, and then, oxidizing the trans-4-(trans-4-alkylcyclohexyl) cyclohexanol with an oxidizing agent under the catalytic action of piperidine nitroxide free radicals to obtain 4-(trans-4-alkyl cyclohexyl) cyclohexanone. According to the synthesis method, piperidine nitroxide free radicals containing substituent groups are used as the catalyst, compared with a TEMPO catalyst, the production cost is reduced, cost economy is achieved, meanwhile, the problem that TEMPO is difficult to separate and causes pollution easily is solved, and the synthesis method is suitable for actual industrial production.

Process for the preparation of liquid crystalline ethers

Preparation of 4- or 4'-mono- and 4,4'-di-substituted (bi)cyclohexyl (bi)cyclohexylmethyl ethers (I) by reducing corresponding (bi)cyclohexyl (cyclohexyl)cyclohexanoates (II) comprises reacting 1 molar equivalent (II) with 2-6 molar equivalent of an optionally mono-, di- or tri-substituted silane (III) in a free radical chain reaction, optionally in a solvent. Preparation of 4- or 4'-mono- and 4,4'-di-substituted (bi)cyclohexyl (bi)cyclohexylmethyl ethers (I) by reducing corresponding (bi)cyclohexyl (cyclohexyl)cyclohexanoates (II) comprises reacting 1 molar equivalent (II) with 2-6 molar equivalent of an optionally mono-, di- or tri-substituted silane R1>1>R1>2>R1>3>SiH (III) of the following formulae in a free radical chain reaction, optionally in a solvent: [Image] [Image] R1>, R2>1-12C alkyl or 2-12C alkenyl, which is an unsubstituted or has one CN or CF3 substituent or at least one halogen substituent and may have CH2 group(s) replaced by -O-, -S-, cyclopropan-1,2-diyl or cyclobutan-1,3-diyl, without directly linked O atoms, or H in one case only; R3>-R6>H, halogen, methyl or CN; R11>-R13>Cl in at least one case, otherwise H, 1-8C alkyl, 1-8C alkoxy, cyclohexyl, methylcyclohexyl, cyclopentyl or phenyl or R1>1>R1>2> is a -(CH2)r- group; m, n : 0 or 1; r : 4 or 5 An independent claim is included for the preparation of symmetric di-(bi)cyclohexyl(alkyl) ethers (XXI) with 1-3 C alkyl groups: [Image] p, q : 0, 1, 2 or 3; p+q : 1, 2 or 3.