Process for preparing chlorinated diphenyl ethers

Details Process for preparing chlorinated diphenyl ethers Process for preparing chlorinated diphenyl ethers

1987-05-04

1988-08-23

Lone, Werren B.

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

C07C 4116, C07C 43275, C07C 4329

Patent

active

047662530

ABSTRACT:
The invention relates to a novel process for preparing chlorodiphenyl ethers of the formula I ##STR1## in which R is hydrogen or chlorine, which comprises heating a material of the formula III ##STR2## in which X is one equivalent of an alkali metal or alkaline earth metal ion and R is as defined above, in an excess of a dichlorobenzene of the formula II ##STR3## in the presence of a copper catalyst and of an aprotic solvent as cocatalyst at temperatures of 120.degree.-220.degree. C.

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patent: 4349487 (1982-09-01), Renga
Gazz. Chim. Ital. 86, 1956, pp. 1246-1257.
FACS, 59, 1937, pp. 2578-2580, Suter et al.
J. Org. Chem., 27, 1962, pp. 4098-4101, Randall et al.
J. Am. Chem. Soc., 74, p. 5782, 1952, Kornblum et al.

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