https://wikimd.org/index.php?action=history&feed=atom&title=N-ButyllithiumN-Butyllithium - Revision history2026-05-11T12:35:20ZRevision history for this page on the wikiMediaWiki 1.44.2https://wikimd.org/index.php?title=N-Butyllithium&diff=6348910&oldid=prevPrab: CSV import2025-02-27T00:58:28Z<p>CSV import</p>
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<p><b>New page</b></p><div>'''N-Butyllithium''' ('''n-BuLi''') is an organolithium reagent used in synthetic chemistry. It is a colorless or light yellow solution when dissolved in hydrocarbon solvents such as hexane or heptane. N-Butyllithium is highly reactive and functions as a strong base and nucleophile in organic synthesis. It is commonly used for the deprotonation of acidic hydrogen atoms in organic molecules, allowing for the formation of carbon-lithium bonds and subsequent nucleophilic addition reactions.<br />
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==Properties==<br />
N-Butyllithium exists as a cluster in solution and in the solid state, a characteristic common to many organolithium compounds. It is extremely pyrophoric and reacts violently with water, producing butane and lithium hydroxide. Due to its high reactivity, n-BuLi must be handled under an inert atmosphere in a dry solvent.<br />
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==Synthesis==<br />
N-Butyllithium is typically synthesized by the reaction of butyl chloride with lithium metal in a hydrocarbon solvent. This process involves a two-phase reaction, where the lithium metal is dissolved in a non-polar solvent and reacts with the butyl chloride to produce n-BuLi and lithium chloride (LiCl) as a by-product.<br />
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==Applications==<br />
N-Butyllithium is widely used in organic synthesis for various applications:<br />
* '''Deprotonation:''' It is employed to deprotonate acidic protons from molecules, generating carbanions which can act as nucleophiles.<br />
* '''Anionic polymerization:''' n-BuLi serves as an initiator for the anionic polymerization of dienes, such as butadiene and isoprene, leading to the production of synthetic rubbers.<br />
* '''Halogen-Lithium exchange:''' It is used in halogen-lithium exchange reactions, which are useful for the synthesis of organolithium compounds from organic halides.<br />
* '''Metalation:''' The reagent can effect metalation, where a hydrogen atom is replaced by a lithium atom, facilitating further functionalization of the molecule.<br />
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==Safety==<br />
Due to its strong reactivity, especially with water and air, n-BuLi must be handled with extreme caution. Appropriate safety measures, including the use of an inert atmosphere and dry solvents, are essential to prevent uncontrolled reactions.<br />
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==See Also==<br />
* [[Organolithium reagent]]<br />
* [[Synthetic chemistry]]<br />
* [[Deprotonation]]<br />
* [[Anionic polymerization]]<br />
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[[Category:Organolithium reagents]]<br />
[[Category:Reagents for organic chemistry]]<br />
[[Category:Chemical synthesis]]<br />
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{{Chem-stub}}</div>Prab