102292-30-8

Basic information

• Product Name: 5-bromo-2-methyl-2,3-dihydro-1-benzofuran
• Synonyms: 5-Bromo-2-methyl-2,3-dihydro-1-benzofuran; benzofuran, 5-bromo-2,3-dihydro-2-methyl-
• CAS NO: 102292-30-8
• Molecular Formula: C₉H₉BrO
• Molecular Weight: 213.0712
• Mol File: 102292-30-8.mol
• Article Data: 6

Chemical Properties

• Boiling Point: 257.3°C at 760 mmHg
• Flash Point: 101.9°C
• Density: 1.461g/cm³
• Vapor Pressure: 0.0236mmHg at 25°C
• Refractive Index: 1.57
• CAS DataBase Reference: 5-bromo-2-methyl-2,3-dihydro-1-benzofuran(CAS DataBase Reference)
• NIST Chemistry Reference: 5-bromo-2-methyl-2,3-dihydro-1-benzofuran(102292-30-8)
• EPA Substance Registry System: 5-bromo-2-methyl-2,3-dihydro-1-benzofuran(102292-30-8)

Safety Data

• Hazardous Substances Data: 102292-30-8(Hazardous Substances Data)

Upstream product

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Relevant articles and documents

ACETYLATION, BROMINATION, AND NITRATION OF BENZOXAHETEROCYCLES AND SYNTHESIS OF β-AMINOKETONES FROM ACETYL DERIVATIVES

The method of competing reactions was used to establish the sequence of variation of the relative rates of acetylation, bromination, and nitration reactions of 2-methylcoumaran, chroman, 2,3,4,5-tetrahydrobenzo-1-oxepan, and 1-methoxy-2-ethylbenzene.The i

Investigation and mechanistic study into intramolecular hydroalkoxylation of unactivated alkenols catalyzed by cationic lanthanide complexes

Cationic lanthanide complexes of the type [Ln(CH3CN)9]3+[(AlCl4)3]3–·CH3CN (Ln = Pr, Nd, Sm, Gd, Er, Yb, Y) served as effective catalysts for the intramolecular hydroalkoxylation/cyclization of unactivated alkenols to yield the cyclic ethers with Markovnikov regioselectivity under mild conditions. Novel cationic complexes, [AlCl(CH3CN)5]2+[(AlCl4)2]2–·CH3CN and [Nd(CH3CN)9]3+[(FeCl4)3]3–·CH3CN, were synthesized and evaluated for the intramolecular hydroalkoxylation/cyclization of unactivated alkenols for comparison. The active sequence of [Nd(CH3CN)9]3+[(FeCl4)3]3–·CH3CN 3CN)5]2+[(AlCl4)2]2–·CH3CN 3CN)9]3+[(AlCl4)3]3–·CH3CN observed indicated that both the cation and anion have great influence on the activity. Comparative study on the activity of AlCl3and its cationic complex [AlCl(CH3CN)5]2+[(AlCl4)2]2–·CH3CN revealed the formation of the cationic Al center enhanced the activity greatly. The1H NMR studies indicated the activation of hydroxyl and olefin by the cationic Ln3+center were involved in the reaction pathways.

Process for the preparation of 1,2-benzoxathiine derivatives

A novel process for the preparation of 3,4-dihydro-2,2-dioxo-3-methyl-1,2-benzoxathiin-8-ylsulfonamide of the formula I STR1 reacting a 5-halo-2,3-dihydro-2-methylbenzo[b]furan of the formula II STR2 wherein Hal is chlorine or bromine, with chlorosulfonic acid to give a 6-halo-2,2-dioxo-3-methyl-1,2-benzoxathiin-8-ylsulfonyl chloride of formula III STR3 wherein Hal is chlorine or bromine, converting this sulfonyl chloride with ammonia into a 6-halo-2,2-dioxo-3-methyl-1,2-benzoxathiin-8-ylsulfonamide of formula IV STR4 wherein Hal is chlorine or bromine, dehalogenating this sulfonamide with hydrogen in the presence of a tertiary amine and a noble metal catalyst, and hydrogenating the resultant 2,2-dioxo-3-methyl-1,2-benzoxathiin-8-ylsulfonamide of formula V STR5 with hydrogen in the presence of a noble metal catalyst.