Method for synthesizing trans-4-alkylcyclohexyl benzene structure liquid crystal intermediates and monomers
The invention discloses a method for synthesizing trans-4-alkylcyclohexyl benzene structure liquid crystal intermediates and monomers and belongs to the technical field of trans-cyclohexyl benzene liquid crystal. The method comprises the following steps:
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(2018/03/01)
Method of producing hydrogen of the reaction product and substrate
PROBLEM TO BE SOLVED: To provide a new production method requiring no reactor having high stirring power for high-temperature and high-pressure conditions in a gas-liquid catalytic reaction of a liquid phase of a substrate with hydrogen in the presence of a solid catalyst. SOLUTION: Micro or nano bubbles are introduced into a liquid phase consisting of a solvent and a substrate so that a reaction product is produced by gas-liquid contact of the substrate with hydrogen in the presence of the solid catalyst. The substrate is one of organic compounds having an unsaturated carbon bond and secondary and tertiary alcohols. COPYRIGHT: (C)2013,JPOandINPIT
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Paragraph 0055; 0056
(2017/03/24)
Dihalogenobenzene derivatives
The invention relates to dihalogenobenzene derivatives of the formula I wherein R1, R2, A1, A2, A3, Z1, Z2 and n are as defined in the specification.
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(2008/06/13)
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