Examples of 'alkyl lithium' in a sentence
Meaning of "alkyl lithium"
alkyl lithium: Compounds consisting of an alkyl group bonded to a lithium atom. They are commonly used as strong bases and as catalysts in organic chemistry reactions
How to use "alkyl lithium" in a sentence
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alkyl lithium
Preferred bases include alkyl lithium bases.
Preferred alkyl lithium compounds include butyl lithium compounds.
Polymerization is initiated by alkyl lithium compounds.
Alkyl lithium initiators having a secondary alkyl group are preferred.
The preferred metalating agents are alkyl lithium or magnesium.
Alkyl lithium reagent.
The hydrogenation step is performed without an alkyl lithium or alkoxy lithium compound.
Alkyl lithium compound.
The second continuous flow of alkyl lithium can be in one or more suitable solvents.
Alkyl lithium or alkyl magnesium halide is preferably used as the base.
These objectives are better obtained by the use of secondary or tertiary alkyl lithium initiators.
The alkyl lithium initiators are also widely used in conventional polymerization of styrene.
Esters can be converted to tertiary alcohols with a Grignard reagent or an alkyl lithium reagents.
Addition of the alkyl lithium resulted in an immediate color change to a dark red color.
Transmetallation of the halo derivative using an alkyl lithium e . g.
See also
Preferred alkylating agents are alkyl lithium and Grignard derivatives using conventional synthetic techniques.
When perfluorohexadiene is prepared, it is preferable to use alkyl lithium.
A more preferred alkyl lithium agent is n-hexyllithium.
Moreover, as the organic alkaline metal compound is preferable an alkyl lithium.
Said alkyl lithium compound is preferably butyl lithium ;.
In some embodiments, the second continuous flow of alkyl lithium is in heptane.
The required alkyl lithium was prepared using naphthyl lithium, as follows.
Embodiments of initiation systems include anionic initiators, such as alkyl lithium compounds.
Thus, it was verified that alkyl lithium did no longer exist in the solution.
The alkyl lithium reagent may be conveniently purchased as a solution in a solvent, such as hexane.
Deprotonation of the sulfone is accomplished with an alkyl lithium in an non-protic solvent.
In some embodiments, the alkyl lithium vessel and the tetrahydrofuran vessel are pressurized.
The process of Claim 6 wherein the alkyl metal salt is alkyl lithium.
A preferred strong base is an alkyl lithium and the most preferred strong base is n-BuLi.
Examples of suitable organometallic reagents include Grignard Reagents, alkyl lithium reagents, and the like.
An alkyl Grignard reagent or alkyl lithium is added, with methyl lithium being preferred.
Common organometallic species include, but are not limited to, alkyl lithium and Grignard reagents.
But alkyl lithium is added to a " dead " polymer.
The a-aryloxy ester is then contacted with an alkyl lithium compound to form the enolate.
An alkyl lithium compound is added quickly, leading, almost instantaneously, to a dark red colored solution.
The method of Claim 1 wherein the alkali metal alkoxide and alkyl lithium are added sequentially.
WIth strong bases, such as alkyl lithium compounds, a methyl group undergoes deprotonation to give PMe2CH2Li.
A preparation process according to claim 2, wherein the alkyl lithium is n-butyl lithium.
The use of a C1-6 alkyl lithium or triethylaluminum reducing agent is especially preferred.
The resulting acetylene, 67, is then treated with an alkyl lithium reagent at low temperature.
The alkyl lithium compound is present in about 1.2 eq.
In some embodiments, the alkyl lithium is n-butyl lithium.
Preferred base includes, for example, a lithium dialkylamide, phenyl lithium, a lower alkyl lithium and the like.
Suitable bases include an alkyl lithium base, preferably n - butyl lithium.
The alkyl lithiums are selected from linear and branched ( C1 to C10 ) alkyl lithium compounds.
The method of claim 1, wherein the alkyl lithium base is t-butyl lithium.
In process ( i ), suitable alkyl lithium reagents include n-butyl lithium.
Contacting the product of step ( 1 ) with an alkyl lithium base ; and.
Suitable bases include alkyl lithium such as n-BuLi, sec-BuLi or t-BuLi.
The process of Claim 7 wherein the alkyl lithium is n-butyllithium.
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