Organic compounds -- part of the class 532-570 series – Organic compounds – Phosphorus containing
Reexamination Certificate
2007-06-12
2007-06-12
Page, Thurman K. (Department: 1621)
Organic compounds -- part of the class 532-570 series
Organic compounds
Phosphorus containing
Reexamination Certificate
active
10535372
ABSTRACT:
The invention relates to a process for the preparation of cycloorganylphosphanes of formula 1 (R1P)nby reaction of dihalo(organyl)phosphanes of formula R1PHal2with: a) activated zinc in an organic solvent, or with: b) an alkali metal or alkaline earth metal in a non-polar organic solvent in the presence of an activator, wherein R1is C1–C12alkyl; C3–C12cycloalkyl, aryl or heteroaryl, Hal is F, Cl, Br or I, and n is a number from 3 to 20. The invention relates also to novel di(alkali metal/alkaline earth metal) oligophosphanediides and to the use thereof in the preparation of organophosphorus compounds.
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Boulmaâz Souâd
Geier Jens
Grützmacher Hansjörg
Scherer Markus
Schönberg Hartmut
Ciba Specialty Chemicals Corp.
Nwaonicha Chukwuma
Page Thurman K.
Stevenson Tyler A.
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