42969-85-7

Basic information

• Product Name: 2-Methyl-5,7-dichlorobenzofuran
• Synonyms: 2-Methyl-5,7-dichlorobenzofuran;5,7-Dichloro-2-methylbenzofuran
• CAS NO: 42969-85-7
• Molecular Formula: C9H6Cl2O
• Molecular Weight: 201.05
• Mol File: 42969-85-7.mol
• Article Data: 8

Chemical Properties

• Appearance: /
• CAS DataBase Reference: 2-Methyl-5,7-dichlorobenzofuran(CAS DataBase Reference)
• NIST Chemistry Reference: 2-Methyl-5,7-dichlorobenzofuran(42969-85-7)
• EPA Substance Registry System: 2-Methyl-5,7-dichlorobenzofuran(42969-85-7)

Safety Data

• Hazardous Substances Data: 42969-85-7(Hazardous Substances Data)

Upstream product

• 17061-90-4 2,4-dichloro-1-(prop-2-yn-1-yloxy)benzene 
• 6075-24-7 5,7-dichloro-2-iodomethyl-2,3-dihydrobenzofuran 
• 1321985-62-9 6-(β,β-dibromovinyl)-2,4-dichlorophenol 
• 90-60-8 3,5-dichlorosalicyclaldehyde 
• 1336808-79-7 5,7-dichloro-2-bromobenzo[b]furan 
• 75-24-1 trimethylaluminum 
• 2040-83-7 2,4-dichloro-6-iodophenol 

Relevant articles and documents

Highly Efficient Synthesis of 2-Substituted Benzo[ b ]furan Derivatives from the Cross-Coupling Reactions of 2-Halobenzo[ b ]furans with Organoalane Reagents

A highly efficient and simple route for the synthesis of 2-substituted benzo[ b ]furans has been developed by palladium-catalyzed cross-coupling reaction of 2-halobenzo[ b ]furans with aryl, alkynyl, and alkylaluminum reagents. Various 2-aryl-, 2-alkynyl-, and 2-alkyl-substituted benzo[ b ]furan derivatives can be obtained in 23-97% isolated yields using 2-3 mol% PdCl 2/4-6 mol% XantPhos as the catalyst under mild reaction conditions. The aryls bearing electron-donating or electron-withdrawing groups in 2-halobenzo[ b ]furans gave products in 40-97% isolated yields. In addition, aluminum reagents containing thienyl, furanyl, trimethylsilanyl, and benzyl groups worked efficiently with 2-halobenzo[ b ]furans as well, and three bioactive molecules with 2-substituted benzo[ b ]furan skeleton were synthesized. Furthermore, the broad substrates scope and the typical maintenance of vigorous efficiency on gram scale make this protocol a potentially practical method to synthesize 2-substituted benzo[ b ]furan derivatives. On the basis of the experimental results, a possible catalytic cycle has been proposed.

Direct Synthesis of 2-Methylbenzofurans from Calcium Carbide and Salicylaldehyde p -Tosylhydrazones

A new methodology for the construction of methyl-substituted benzofuran rings from the reactions of calcium carbide with salicylaldehyde p-tosylhydrazones/2-hydroxyacetophenone p-tosylhydrazones is described. Various 2-methylbenzofurans and 2,3-dimethylbenzofurans could be obtained in satisfactory yield by using a cuprous chloride catalyst. The advantages of this protocol include the use of a readily available and easy-to-handle acetylene source and simple workup procedure.

An efficient solid-phase synthesis of substituted benzofuran using selenium-bound resin

A very efficient solid-phase synthesis of substituted benzofuran using polymer-supported selenium resin is described. The advantages of the new method are good yields, high purity, straightforward operations, broad range and high diversity of products, lack of odor, and good stability of the resins. The easy work-up procedure makes the method suitable for building parallel libraries.