Method of producing a highly pure borate complex of triarylboran

Details Method of producing a highly pure borate complex of triarylboran Method of producing a highly pure borate complex of triarylboran

1993-10-27

1995-05-30

Mars, Howard T.

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

Organic compounds

Boron containing

C07F 504

Patent

active

054203554

ABSTRACT:
A highly pure borate complex of a trialkylborane with an alkylated or arylated alkali metal is obtained by reacting an aryl magnesium halide with a boron trihalide to produce a triarylborane product. The triarylborane product is then subjected to thorough removal of magnesium salts produced as by-products and removal of unreacted aryl magnesium halide. A solution of alkylated or arylated alkali metal in a hydrocarbon solvent, a straight chain ether solvent or a mixed solvent thereof is then added dropwise to the solution of triarylborane product in a hydrocarbon solvent, straight chain ether solvent or mixed solvent thereof, while keeping the temperature range from -80.degree. to 25.degree. C.

REFERENCES:
patent: 3405179 (1968-10-01), Wowk
Negishi et al., J. C. S. Perkin II, vol. 32, p. 1225, Feb. 1978, "Scope and Reaction of Organoboranes with Organolithiums as a Method of Preparation of Lithium Organoborates. Stability of Lithium Organoborates".

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