- Synthesis method of trans-4-alkyl cyclohexyl benzoic acid
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The invention belongs to the field of organic chemical synthesis, and discloses a synthetic method of trans-4-alkyl cyclohexyl benzoic acid. According to the method, trans-4-alkyl cyclohexyl phenol isused as a raw material and reacts with sulfonyl chloride to generate aromatic sulfonate, a carbonyl insertion reaction of aromatic sulfonate is catalyzed by palladium to generate a trans-4-alkyl cyclohexyl benzoate compound with alkyl alcohol, and finally ester hydrolysis is performed to obtain the target product trans-4-alkyl cyclohexyl benzoic acid. The method has the advantages of mild reaction conditions, simple synthesis process, and high yield (up to 90% or above), the catalyst is safe and nontoxic and can be repeatedly used, and the synthesis method is environmentally friendly and canbe easily applied to industrial production.
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Paragraph 0040; 0044
(2020/07/15)
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- Optically active compound and photosensitive resin composition
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A photoactive compound is used in combination with a photosensitizer, represented by the following formula (1): A?[(J)m?(X-Pro)]n ??(1) wherein A represents a hydrophobic unit comprising at least one kind of hydrophobic groups selected from a hydrocarbon group and a heterocyclic group, J represents a connecting group, X-Pro represents a hydrophilic group protected by a protective group Pro which is removable by light exposure, m represents 0 or 1, and n represents an integer of not less than 1. The protective group Pro may be removable by light exposure in association with the photosensitizer (especially, a photo acid generator), or may be a hydrophobic protective group. The hydrophilic group may be a hydroxyl group or a carboxyl group. The photoactive compound has high sensitivity to a light source of short wavelength beams, for resist application, therefore, the photoactive compound is advantageously used for forming a pattern with high resolution.
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- The Synthesis and Liquid Crystal Behavior of p-Benzotrifluoride Compounds II
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Four compounds with the general structure R-X-Y-CH2-CH2-Ph-CF3 were synthesized, where X is a 1,4-disubstituted trans-cyclohexyl ring, Y is a phenyl ring, and R is a n-alkyl group.The synthetic procedure is discussed and the structural assignments were confirmed by NMR spectroscopy.The liquid crystal behavior of these compounds was evaluated by DSC and polarizing microscopy.They might be used in fast switching liquid crystal mixtures.
- Liang, J. C.,Chen, L.
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p. 253 - 258
(2007/10/02)
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- SYNTHESIS OF TRANS-4-ALKYL-1-PHENYLCYCLOHEXANES AND THEIR DERIVATIVES
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The alkylation of benzene by 1-alkanoyl-2-chlorocyclohexanes and 1-alkanoyl-1-cyclohexenes leads to the formation of cis- and trans-4-alkanoyl-1-phenylcyclohexanes, the yields of which increase with increase in the reaction temperature. trans-4-Alkyl-1-phenylcyclohexanes were obtained from 4-alkanoyl-1-phenylcyclohexanes and also from the products from the reaction of 4-alkylcyclohexanones with phenylmagnesium bromide.Some mesomorphous derivatives of these hydrocarbons were synthesized.
- Bezborodov, V. S.,Bubel', O. N.,Konovalov, V. A.,Ptashnikov, Yu. L.
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p. 1479 - 1483
(2007/10/02)
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- CONVENIENT SYNTHESIS OF 4-(TRANS-4 prime -N-ALKYLCYCLOHEXYL) BENZOIC ACIDS.
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A convenient method of obtaining 4-(trans-4 prime -n-alkylcyclohexyl) benzoic acids from alkanoyl chlorides, cyclohexane and benzene is described. Homologous series of above mentioned acids and their nitriles with alkyl tail 2 to 10 carbon atoms were prepared and temperatures of their phase transitions were determined.
- Szczucinski,Dabrowski
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