Polycholorinated biphenyls. VI. 2,3,7,8-tetrachlorodibenzofuran, a critical byproduct in the synthesis of 2,2',4,4',5,5'-hexachlorobiphenyl by the Ullmann reaction | Health & Environmental Research Online (HERO)

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Citation
Tags

HERO ID

2177292

Reference Type

Journal Article

Title

Polycholorinated biphenyls. VI. 2,3,7,8-tetrachlorodibenzofuran, a critical byproduct in the synthesis of 2,2',4,4',5,5'-hexachlorobiphenyl by the Ullmann reaction

Author(s)

Moron, M; Sundström G; Wachtmeister CA

Year

1973

Is Peer Reviewed?

Yes

Journal

Acta Chemica Scandinavica
ISSN: 0904-213X
EISSN: 1902-3103

Volume

Issue

Page Numbers

3121-3122

Language

English

PMID

4204941

DOI

10.3891/acta.chem.scand.27-3121

Web of Science Id

WOS:A1973R931800053

Abstract

2,3,7,8-Tetrachlorodibenzofuran, a critical byproduct in the synthesis of 2,2',4,4',5,5'-hexachlorobiphenyl (a major component in polychlorinated-biphenyl mixtures) by the Ullmann reaction, was produced in order to be used in toxicological investigations. The procedures for isolation of the byproduct are described in detail. Results presented showed that any preparation of polychlorinated biphenyls synthesized via the Ullmann reaction using iodo compounds with chlorine atoms in the ortho positions must be thoroughly analyzed for the presence of chlorinated dibenzofurans.