Process for making chlorophosphanes, phosphinic acid chlorides or thiophosphinic acid chloride, and novel isomeric mixture consisting of chloro-phosphabicyclononanes
AssigneeHoechst Aktiengesellschaft
InventorNorbert Weferling
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Abstract
The disclosure relates to a process for making chlorophosphanes from primary or secondary phosphanes, or phosphinic acid chlorides or thiophosphinic acid chlorides from secondary phosphane oxides or sulfides, wherein the respective starting materials are reacted with hexachloroethane at temperatures of 20.degree. to 180.degree. C. The disclosure also provides as a novel chemical substance an isomeric mixture consisting of 9-Cl-9-phosphabicyclononane [3.3.1] and 9-Cl-9-phosphabicyclononane [4.2.1].
Claims7
A process for making chlorophosphanes of the general formula ##STR5## from primary or secondary phosphanes of the general formula ##STR6## or phosphinic acid chlorides of thiophosphinic acid chlorides of the general formula ##STR7## from secondary phosphane oxides or sulfides of the general formula ##STR8## in which formulae R.sup.1 stands for a linear or branched alkyl group, an aryl or cycloalkyl group having from 1 to 16 carbon atoms,
- R.sup.2 has one of the meanings given for R.sup.1 or stands for hydrogen,
- R.sup.1 and R.sup.2 are CH-bridge members of a bicyclic ring system which includes the P atom, the two said CH-bridge members, and an additional 4 to 6 carbon atoms,
- R.sup.3 has one of the meanings given for R.sup.1,
- X stands for R.sup.1 or chlorine, and X can be R.sup.2 when R.sup.2 is not hydrogen, and
- Y stands for sulfur or oxygen, which comprises reacting the respective starting materials with hexachloroethane at temperatures of 20.degree. to 180.degree. C.
Dependencies are inferred from the claim text.