Merck, 230707-18L-KL, n-Butyllithium solution

General description
n-Butyllithium (n-BuLi) is an organolithium reagent commonly used as a strong base in organic synthesis. It is also used as a lithium source for a wide range of lithium bases, such as lithium amides, acetylides, and alkoxides.
Application
n-BuLi can be used as a strong base to form corresponding lithium salts by the deprotonation of nitrogen, oxygen, phosphorus, and carbon acids. Heterocyclic compounds, such as furans, thiophenes, oxazoles, pyrroles, etc, can be lithiated α to the ring heteroatom using n-BuLi. These lithiated salts react in situ with alkyl halides to obtain useful organic compounds by the formation of the C-C bond. n-BuLi is also a useful reagent for lithium–halogen exchange reactions. Synthesis of various other useful reagents such as lithium diisopropylamide (LDA) and diphenylphosphine is done by in situ reaction with n-BuLi In the polymerization of dienes, n-BuLi is employed as an initiator.
The product is also used in the following reactions:
Anionic rearrangement reactions
Metal-halogen interchange and transmetalation reactions
Elimination reactions
[1,2]- and [1,4]-Wittig rearrangement reaction
Anionic homo-Fries rearrangement reaction
Asymmetric carbolithiation

Packaging
The 25 mL Sure/Seal™ bottle is recommended as a single-use bottle. Repeated punctures will likely result in decreased performance of product.
View returnable container options.
Legal Information
Sure/Seal is a trademark of Sigma-Aldrich Co. LLC