Purification of cyclobutenohaloarenes

Details Purification of cyclobutenohaloarenes Purification of cyclobutenohaloarenes

1988-10-26

1990-06-19

Lone, Werren B.

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

Organic compounds

Halogen containing

570206, C07C 1738, C07C 1710

Patent

active

049355635

ABSTRACT:
A process is described for purification of a reaction product mixture of cyclobuteno-4-haloarene containing aliphatic halide impurities. The product mixture is contacted with a tertiary amine under conditions effective for conversion of aliphatic halides to soluble species which can be removed from the mixture by extraction. The process can be used, for example, in the recovery of 4-bromobenzocyclobutene from a reaction product mixture containing aliphatic halide by-products such as 1-bromo-2-(2-bromoethyl)benzene.

REFERENCES:
patent: 2564507 (1948-09-01), Schaeffer
patent: 2654506 (1948-09-01), Schaeffer
patent: 2908730 (1959-10-01), Binning et al.
patent: 3539653 (1970-11-01), Frevel et al.
patent: 4401559 (1983-08-01), Gaillard
patent: 4686317 (1987-08-01), Quann et al.
Borg et al, "A New Synthesis of Benzuryclobutene" Oct. 1958, p. 283.

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