Hydrocarbon solvent solutions of complexes of sec-butyllithium a

Details Hydrocarbon solvent solutions of complexes of sec-butyllithium a Hydrocarbon solvent solutions of complexes of sec-butyllithium a

1982-07-06

1984-07-17

Sneed, Helen M. S.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

502157, C07F 302

Patent

active

044605153

ABSTRACT:
Hydrocarbon, especially aliphatic and/or cycloaliphatic hydrocarbon, solvent solutions of complexes of sec-butyllithium and ethyllithium, exemplified by (a) equimolar solutions of sec-butyllithium and ethyllithium in n-hexane or cyclohexane, (b) 35 mole % sec-butyllithium and 65 molar % ethyllithium in n-hexane or cyclohexane, and (c) 1 mole % sec-butyllithium and 3 mole % ethyllithium in n-hexane or cyclohexane. The thermal stability of the complexes of sec-butyllithium and ethyllithium in the solutions thereof in hydrocarbon solvents has been found to be outstanding. The hydrocarbon solvent solutions, especially where said solvents are aliphatic or cycloaliphatic, have marked advantages over conventionally used hydrocarbon solvent solutions of sec-butyllithium as catalysts or initiators in polymerization reactions, telomerization reactions, metalation reactions, halogen-metal interchange reactions, and in the preparation of magnesium alkyls and other organometallics.

REFERENCES:
patent: 3155736 (1964-11-01), Beumel
patent: 3438420 (1969-04-01), Rai et al.
patent: 3452111 (1969-06-01), Kamienski et al.
patent: 3452112 (1969-06-01), Kamienski et al.
Weiner et al., JACS, 85, 485-486, (1973).

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