Process for the synthesis of cycloorganylphosphanes and di(alkyli metal/alkaline earth metal) oligophosphanediides

US7230137B2 · kind B2 · utility

Assignee

• Ciba Specialty Chemicals Corporation · US

Inventors

• Hansjörg Grützmacher · Dielsdorf, CH
• Jens Geier · Hayingen, DE
• Hartmut Schonberg · Adliswil, CH
• Markus Scherer · Lebach, DE
• Daniel Stein · Rochester, US
• Souad Boulmaaz · Birsfelden, CH

Key dates

• Filing date: Nov 24, 2003
• Grant date: Jun 12, 2007
• Expiry date: Jan 18, 2024

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07F9/6596
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The invention relates to a process for the preparation of cycloorganylphosphanes of formula 1 (R1P)n by reaction of dihalo(organyl)phosphanes of formula R1PHal2 with: 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 R1 is C1–C12alkyl; C3–C12 cycloalkyl, 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.