Process for making chlorophosphines and thiophosphinic...

Details Process for making chlorophosphines and thiophosphinic... Process for making chlorophosphines and thiophosphinic...

C - Chemistry, Metallurgy

07

F

260/537.6

C07F 9/28 (2006.01) C07F 9/34 (2006.01) C07F 9/52 (2006.01) C07F 9/6568 (2006.01)

Patent

CA 1283664

PROCESS FOR MAKING CHLOROPHOSPHINES AND THIOPHOSPHINIC ACID CHLORIDES, AND NOVEL 9-CHLORO-9-THIOXO-9-PHOSPHABI- CYCLONONANES ABSTRACT OF THE DISCLOSURE Chlorophosphines or thiophosphinic acid chlorides of the general formulae RPCl2, R2PCl or R2P(=S)Cl are made from feed materials selected from hydrogen-functional primary or secondary phosphines or secondary phosphine sulfides, where R stands for identical or different, li- near or branched, substituted or unsubstituted alkyl ra- dicals having from 1 - 16 carbon atoms, aryl radicals, aralkyl radicals or alkylaryl radicals having from 6 - 9 carbon atoms or cycloalkyl radicals having from 5 - 10 carbon atoms. To this end, the feed materials are reacted with phosphorus pentachloride, or with chlorine gas in the presence of phosphorus trichloride at temperatures within the range -78 to +145°C. It is possible for two radicals R to be linked together by one or two substitut- ed or unsubstituted hydrocarbon chains having from 1 - 4 carbon atoms.

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