Hydrogen Bromide → HCID 23455899, compound

HRID 1680707Notes

Reaction equation

HRID 1680707 reaction equation
C(OC([C:6]1[O:7][C:8]2[CH:15]=[CH:14][C:13]([C:16]3[CH:21]=[CH:20][C:19]([CH2:22][C:23]([O:25]CC)=[O:24])=[CH:18][CH:17]=3)=[CH:12][C:9]=2[C:10]=1[CH3:11])=O)C.Br>C(O)(=O)C>[CH3:11][C:10]1[C:9]2[CH:12]=[C:13]([C:16]3[CH:21]=[CH:20][C:19]([CH2:22][C:23]([OH:25])=[O:24])=[CH:18][CH:17]=3)[CH:14]=[CH:15][C:8]=2[O:7][CH:6]=1

Participants

4

Reactant 2

HCID 260Hydrogen BromideHCID 12902869HCID 12902869, compound

Product 1

HCID 23455899HCID 23455899, compound

Reagents, catalysts & solvents 1

HCID 176Acetic AcidSolvent

Procedure

A solution of 17 g. of the product of step A in 100 ml. of acetic acid with 35 ml. of 48 percent hydrobromic acid is heated at reflux for three hours, then poured into ice water. This mixture is extracted into dichloromethane, and the extracts are dried to provide 4-(3-methylbenzofuran-5-yl)phenylacetic acid. This intermediate is esterified by heating with a trace of sulfuric acid in ethanol. The product is purified by chromatography on silica gel, eluting with 20 percent dichloromethane in carbon tetrachloride to provide ethyl 4-(3-methylbenzofuran-5-yl)phenylacetate.

Workup

  1. temperatureat reflux for three hours
  2. extractionThis mixture is extracted into dichloromethane
  3. customthe extracts are dried

Sources & evidence

ORD record
ord-0871856f0b9d470db87cbd2c7588c054
Source dataset
uspto-grants-1981_06
Patent number
US04275221

Reaction notes

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