Preparation of chlorosyringols and chloropyrogallols-components of pulp bleaching effluents
摘要:
The preparation and properties of chlorosyringols and chloropyrogallols, components of pulp bleaching effluents, and their acetates are given. The compounds are obtained mainly by direct chlorination of both phenols or of syringol acetate with various chlorinating reagents. 5-Chloropyrogallol and 4,5-dichloropyrogallol were the products of demethylation of 5-chloro-3-methoxycatechol acetate and 4,5-dichloro-3-methoxycatechol acetate, respectively. The acetates of all ten chloro compounds were separated by gas chromatography. Electron impact mass spectra and H-1 and C-13 NMR data for the acetates are given.
Preparation of chlorosyringols and chloropyrogallols-components of pulp bleaching effluents
摘要:
The preparation and properties of chlorosyringols and chloropyrogallols, components of pulp bleaching effluents, and their acetates are given. The compounds are obtained mainly by direct chlorination of both phenols or of syringol acetate with various chlorinating reagents. 5-Chloropyrogallol and 4,5-dichloropyrogallol were the products of demethylation of 5-chloro-3-methoxycatechol acetate and 4,5-dichloro-3-methoxycatechol acetate, respectively. The acetates of all ten chloro compounds were separated by gas chromatography. Electron impact mass spectra and H-1 and C-13 NMR data for the acetates are given.
Halogenation of Pyrogallol Trimethyl Ether and Similar Systems<sup>1a</sup>
作者:DVORA FRIEDMAN、DAVID GINSBURG
DOI:10.1021/jo01095a005
日期:1958.1
Peratoner, Gazzetta Chimica Italiana, 1898, vol. 28 I, p. 222
作者:Peratoner
DOI:——
日期:——
Preparation of chlorosyringols and chloropyrogallols-components of pulp bleaching effluents
作者:Terrence J. Smith、Ross H. Wearne、Adrian F.A. Wallis
DOI:10.1016/0045-6535(94)90009-4
日期:1994.3
The preparation and properties of chlorosyringols and chloropyrogallols, components of pulp bleaching effluents, and their acetates are given. The compounds are obtained mainly by direct chlorination of both phenols or of syringol acetate with various chlorinating reagents. 5-Chloropyrogallol and 4,5-dichloropyrogallol were the products of demethylation of 5-chloro-3-methoxycatechol acetate and 4,5-dichloro-3-methoxycatechol acetate, respectively. The acetates of all ten chloro compounds were separated by gas chromatography. Electron impact mass spectra and H-1 and C-13 NMR data for the acetates are given.