Preparation of tertiary phosphine sulfonic acids

Details Preparation of tertiary phosphine sulfonic acids Preparation of tertiary phosphine sulfonic acids

1997-04-02

1998-06-02

Killos, Paul J.

Organic compounds -- part of the class 532-570 series

Organic compounds

Sulfonic acids or salts thereof

C07F 502

Patent

active

057602867

ABSTRACT:
Tertiary phosphine sulfonic acids are important ligands for transition metals where the complex is effective in catalyzing the oligomerization of alpha-olefins. An improved method of preparation utilizes inverse addition of lithiated aryl sulfonate salts to dihalophosphines at a rate which maintains a homogeneous reaction mixture, then alkylating the product of this reaction--a monohalo secondary phosphine sulfonate--with an organometallic compound, such as a Grignard reagent or an organolithium species.

REFERENCES:
patent: 4716138 (1987-12-01), Murray
patent: 4822915 (1989-04-01), Murray

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