132900-75-5

Basic information

• Product Name: Benzoic acid, 4-[4-[(1-oxo-2-propenyl)oxy]butoxy]-, 2-Methyl-1,4-phenylene ester
• Synonyms: Benzoic acid, 4-[4-[(1-oxo-2-propenyl)oxy]butoxy]-, 2-Methyl-1,4-phenylene ester;4-[4-[(1-Oxo-2-propenyl)oxy]butoxy]benzoic acid 2-methyl-1,4-phenylene ester;Benzoic acid, 4-[4-[(1-oxo-2-propen-1-yl)oxy]butoxy]-, 1,1'-(2-methyl-1,4-phenylene) ester
• CAS NO: 132900-75-5
• Molecular Formula: C₃₅H₃₆O₁₀
• Molecular Weight: 616.65434
• Mol File: 132900-75-5.mol

Chemical Properties

• Boiling Point: 748.5±60.0 °C(Predicted)
• Appearance: /
• Density: 1.195±0.06 g/cm3(Predicted)
• Vapor Pressure: 0-0Pa at 20-50℃
• CAS DataBase Reference: Benzoic acid, 4-[4-[(1-oxo-2-propenyl)oxy]butoxy]-, 2-Methyl-1,4-phenylene ester(CAS DataBase Reference)
• NIST Chemistry Reference: Benzoic acid, 4-[4-[(1-oxo-2-propenyl)oxy]butoxy]-, 2-Methyl-1,4-phenylene ester(132900-75-5)
• EPA Substance Registry System: Benzoic acid, 4-[4-[(1-oxo-2-propenyl)oxy]butoxy]-, 2-Methyl-1,4-phenylene ester(132900-75-5)

Safety Data

• Hazardous Substances Data: 132900-75-5(Hazardous Substances Data)

Usage

Preparation

The preparation of Benzoic acid, 4-[4-[(1-oxo-2-propenyl)oxy]butoxy]-, 2-Methyl-1,4-phenylene ester is as follows:2-methylhydroquinone 3.0 g (24.2 mmol), 4-[3-(acryloyloxy)butoxy]benzoic acid 14.7 g (55.6 mmol), 4-dimethylaminopyridine (DMAP) 0.18 g (1.5 mmol) ) And 0.14 g (1.4 mmol) of 35% hydrochloric acid were added to 39 mL of tetrahydrofuran (THF) and stirred, and 7.0 g (55.6 mmol) of N,N-diisopropylcarbodiimide (DIC) was added dropwise to the solution. After completion of dropping, the mixture was stirred at 40° C. for 5 hours to obtain a reaction solution. The reaction solution was filtered to remove insoluble matter. A part of the solvent of the filtrate from which the insoluble matter was removed was distilled off to obtain 15 mL of a solution. 60 mL of methanol was added dropwise to 15 mL of the obtained solution to crystallize the polymerizable liquid crystal compound, and then the mixture was stirred under cooling. The obtained precipitate (crystal) is collected by filtration, and the collected precipitate (crystal) is dried to give 2-methyl-1,4-phenylene=bis{4-[3-(acryloyloxy)butoxy]. Benzoate} was obtained with a yield of 94% (14.0 g, 22.8 mmol). The purity of the obtained 2-methyl-1,4-phenylene=bis{4-[3-(acryloyloxy)butoxy]benzoate} was 97.8%. In addition, the content of N,N-diisopropylurea as a by-product contained in the finally obtained 2-methyl-1,4-phenylene bis{4-[3-(acryloyloxy)butoxy]benzoate} , 0.01% by mass relative to the yield, which was sufficiently reduced.

Upstream product

• 69260-42-0 4-[(4-propenoyloxy)butyloxy]benzoic acid 
• 95-71-6 2-methylbenzene-1,4-diol 

Relevant articles and documents

Method of manufacturing a polymerizable liquid crystal compound

[Problem] high efficiency and safe method for producing high purity production by the polymerizable liquid crystal compound. [Solution] the aromatic hydroxy compound, a benzoic acid derivative compounds having a polymerizable group, in a reaction solvent, in the presence of a condensation agent by reaction, (a) a step of preparing a solution containing a polymerizable liquid crystal compound corresponding, to the polymerizable liquid crystal compound is produced, said condensation agent, N, characterized in N - diisopropyl, a polymerizable liquid crystal compound. [Drawing] no

Liquid crystal composition, method for manufacturing the same, and film

A method for manufacturing a liquid crystal composition, the method including concurrently obtaining a liquid crystal compound represented by the formula (I) and a liquid crystal compound represented by the formula (II), by allowing a compound represented by the formula (III) to react with a carboxylic acid represented by the formula (IV) and a carboxylic acid represented by the formula (V), wherein P1 represents a polymerizable group; Sp1 represents a C3-12 divalent aliphatic group, etc; T1 represents a 1,4-phenylene group; T2 represents a divalent group having a single bond or cyclic structure; A1 represents —COO—, etc; A2 and A3 represents —OCO—, etc; X represents a hydrogen atom, C1-12 alkyl group, etc; Y1 and Y2 represents O, NR1 or S; R1 represents a hydrogen atom or methyl group; Formula (I) P1-Sp1-T1-A1-B-A2-T1-Sp1-P1; Formula (II) P1-Sp1-T1-A1-B-A3-T2-X; Formula (III) being HY1—B—Y2H; Formula (IV) P1-Sp1-T1-COOH; Formula (V) X-T2-COOH.

A method of manufacturing a carboxylic acid halide

PROBLEM TO BE SOLVED: To provide a method which can reduce a load on production facility due to acidic gas generated during reaction and can shorten reaction time in the production process of a carboxylic acid halide, and further can alleviate bad actions

SIMPLIFIED CONTROL OF COLOR SHIFTING PROPERTIES OF A CHIRAL LIQUID CRYSTAL POLYMER

A chiral liquid crystal precursor composition which comprises at least one salt that changes a position of the selective reflection band exhibited by the composition in a cured state compared to the position of a selective reflection band exhibited by a composition in the cured state that does not contain the at least one salt. This abstract is neither intended to define the invention disclosed in this specification nor intended to limit the scope of the invention in any way.