Dissolved methyllithium-containing composition for use in synthe

Details Dissolved methyllithium-containing composition for use in synthe Dissolved methyllithium-containing composition for use in synthe

1995-07-07

1997-10-14

Miller, Edward A.

Compositions

Compositions containing a single chemical reactant or plural...

Organic reactant

2521823, C09K 300

Patent

active

056775431

ABSTRACT:
Disclosed is a dissolved methyllithium-containing composition for use in synthesis reactions (synthesis composition) and processes of preparing the composition. In the sythesis composition the methyllithium is contained in a solvent of the general formula (I) ##STR1## wherein independently R.sup.1 and R.sup.2 are a hydrogen, methyl or ethyl residue and R.sup.3 and R.sup.4 are a methyl or ethyl residue. To prepare the methyllithium-containing synthesis composition of the invention lithium powder or granular lithium is dispersed in a solvent having the general formula I, methyl halide is added at a controlled rate, the reaction temperature is maintained in the range of from 0.degree. to 60.degree. C., and the resulting lithium halide is separated from the methyllithium solution.

REFERENCES:
patent: 4976886 (1990-12-01), Morrison et al.
patent: 5095129 (1992-03-01), Ottow et al.
patent: 5100575 (1992-03-01), Hatch et al.
patent: 5171467 (1992-12-01), Mehta et al.
patent: 5523447 (1996-06-01), Kamienski et al.

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