183158-34-1

Basic information

• Product Name: 2,3-Dimethylphenylboronic acid
• Synonyms: AKOS BRN-0096;2,3-DIMETHYLBENZENEBORONIC ACID;2,3-DIMETHYLPHENYLBORONIC ACID;RARECHEM AH PB 0184;O-XYLENE-3-BORONIC ACID;2,3-Dimethylphenylboronic;2,3-DIMETHYLBENZENEBORONIC ACID 98%;2,3-Dimethylphenylboronic Acid (contains varying amounts of Anhydride)
• CAS NO: 183158-34-1
• Molecular Formula: C₈H₁₁BO₂
• Molecular Weight: 149.98
• EINECS: -0
• Product Categories: blocks;BoronicAcids;Boronic Acid series;Aryl;Organoborons;B (Classes of Boron Compounds);Boronic Acids;Boronic acid;Boronic Acids;Boronic Acids and Derivatives
• Mol File: 183158-34-1.mol
• Article Data: 3

Chemical Properties

• Melting Point: 174-180 °C(lit.)
• Boiling Point: 312.6 °C at 760 mmHg
• Flash Point: 142.8 °C
• Appearance: White/Crystalline Powder
• Density: 1.07 g/cm³
• Vapor Pressure: 0.000224mmHg at 25°C
• Refractive Index: 1.523
• Storage Temp.: under inert gas (nitrogen or Argon) at 2-8°C
• Solubility: soluble in Methanol
• PKA: 8.70±0.58(Predicted)
• BRN: 8050763
• CAS DataBase Reference: 2,3-Dimethylphenylboronic acid(CAS DataBase Reference)
• NIST Chemistry Reference: 2,3-Dimethylphenylboronic acid(183158-34-1)
• EPA Substance Registry System: 2,3-Dimethylphenylboronic acid(183158-34-1)

Safety Data

• Hazard Codes: Xi
• Statements: 36/37/38
• Safety Statements: 26-36/37/39-36/37-24/25
• WGK Germany: 3
• HazardClass: IRRITANT
• Hazardous Substances Data: 183158-34-1(Hazardous Substances Data)

Usage

Chemical Properties

White powder

Uses

2,3-Dimethylphenylboronic Acid can be used in the process of preparing thermoset and thermoplastic polyimides derived from novel asym. dianhydrides such as 2,3,3'',4'' benzophenone dianhydride (a-BTDA), and 3,4''-(hexafluoroisopropylidene)diphthalic anhydride (a-6FDA).

InChI:InChI=1/C8H11BO2/c1-6-4-3-5-8(7(6)2)9(10)11/h3-5,10-11H,1-2H3

Upstream product

• 576-23-8 2,3-dimethylbromobenzene 
• 87-59-2 2,3-Dimethylaniline 
• 121-43-7 Trimethyl borate 
• 55171-60-3 2-bromo-3,4-dimethoxybenzylaldehyde 
• 5419-55-6 Triisopropyl borate 

Downstream Products

• 852146-17-9 5-(2,3-dimethylphenyl)furan-2-carboxylic acid methyl ester 
• 936841-42-8 2-(2,3-dimethylphenyl)-N-(2-phenylpropan-2-yl)benzenesulfonamide 
• 1092384-68-3 2-chloro-3-(2,3-dimethylphenyl)pyridine 
• 1092384-67-2 3-chloro-2-(2,3-dimethylphenyl)pyridine 
• 1147270-27-6 7-(3',5'-dimethylphenyl)-2-cyclohexylmethylindan-1-one 
• 1244469-08-6 6-isopropyl-4-(2,3-dimethylphenyl)-2H-cromen-2-one 
• 1345694-95-2 4,6-dichloro-2-(2,3-dimethylphenyl)-5-phenylpyrimidine 
• 1345694-99-6 C₅₈H₆₀N₆O₄ 
• 1259441-81-0 4-chloro-2-(2,3-dimethylphenyl)-5,7-difluoro-3-methylquinoline 
• 1429862-74-7 1-benzyl-3-bromo-4-(2,3-dimethylphenyl)-1H-pyrrole-2,5-dione 
• 1429862-80-5 1-benzyl-3,4-bis(2,3-dimethylphenyl)-1H-pyrrole-2,5-dione 
• 1601392-83-9 C₂₈H₂₅O₃P 
• 1415046-67-1 2-(2,3-dimethylphenyl)-5,5-dimethyl-1,3,2-dioxaborinane 
• 1415045-45-2 N,N-diethyl-2-(2,3-dimethylphenyl)furan-3-carboxamide 

Relevant articles and documents

Method for synthesizing alpha-BPDA

The invention discloses a method for synthesizing alpha-BPDA, which comprises the following steps: by taking 2, 3-methyl bromobenzene and N-methyl-4-chlorophthalimide as raw materials, dissolving 2, 3-methylaniline in dichloromethane, salifying by adopting sulfuric acid, carrying out diazotization reaction, washing, concentrating and recrystallizing to obtain 2, 3-methyl bromobenzene, and preparing 2, 3-BPDA by adopting an Mg/tributyl borate system. The preparation method comprises the following steps: carrying out a Suzuki coupling reaction on 2, 3-methylphenylboronic acid and N-methyl-4-chlorophthalimide to obtain 5-(2, 3-dimethylphenyl)-2-methylisoindole-1, 3-diketone, carrying out alkaline hydrolysis and oxidation through a sodium hydroxide and potassium permanganate system to prepare 2, 3, 3 ', 4'-biphenyl tetracarboxylic acid, and finally forming anhydride in an o-xylene system to obtain the high-purity alpha-BPDA. According to the synthesis method, the problems of low yield and environmental pollution caused by the fact that products in a traditional method are all three isomeric mixtures are solved.

A novel method for the synthesis of substituted naphthalenes and phenanthrenes

A new method for the synthesis of substituted naphthalenes and phenanthrenes was discussed. A formal synthesis of tanshinone I was also studied. Natural products that contain a naphthalene or phenanthrene nucleus often exhibit biological activity, which makes them attractive targets in organic synthesis. The results showed that the reaction can be proceed through at least two different pathways.