94122-64-2Relevant academic research and scientific papers
Method of preparing tetrahalobenzene compounds, chemical intermediates used therein and certain of the compounds themselves
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, (2008/06/13)
Tetrahalobenzene compounds of the formula (I): STR1 in which X is independently chloro or, preferably, fluoro and Y is hydrogen or --N+ R3 A- in which each R is independently C1-4 alkyl and A is a radical capable of forming an anion A-, are prepared by (a) alkylating a compound of formula (II): STR2 or a salt thereof, to form a compound of formula (III): STR3 (b) treating the compound of formula (III) with a quaternizing agent of formula RA to form a compound of formula (IV): STR4 and (c) partially or completely reductively cleaving the compound of formula (IV) to replace one or both --N+ R3 A- groups by hydrogen. Compounds (I), in which Y is --N+ R3 A-, (III) and (IV) are novel. Compound (I) is useful in the synthesis of insecticides.
