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195596

Sigma-Aldrich

sec-Butyllithium solution

1.4 M in cyclohexane

Synonym(s):

Lithium-2-butanide, s-BuLi

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About This Item

Linear Formula:
CH3CH2CH(CH3)Li
CAS Number:
598-30-1
Molecular Weight:
64.06
Beilstein:
3587206
MDL number:
MFCD00009323
UNSPSC Code:
12352103
PubChem Substance ID:
24851700
NACRES:
NA.22

form

liquid

Quality Level

200

concentration

1.4 M in cyclohexane

density

0.769 g/mL at 25 °C

storage temp.

2-8°C

SMILES string

[Li]C(C)CC

InChI

1S/C4H9.Li/c1-3-4-2;/h3H,4H2,1-2H3;

InChI key

VATDYQWILMGLEW-UHFFFAOYSA-N

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Application

sec-Butyllithium solution (1.4M in cyclohexane) has been used in the multi-step synthesis of 5-methyl-5,6-dihydrothymidine (5-MDHT) from thymidine. It has also been used in the copper-catalyzed asymmetric allylic alkylation (AAA) of allyl bromides, chlorides, and ethers in the presence of a chiral ligand.

Packaging

The 25 mL Sure/Seal™ bottle is recommended as a single-use bottle. Repeated punctures will likely result in decreased performance of product.

Legal Information

Sure/Seal is a trademark of Sigma-Aldrich Co. LLC

Signal Word

Danger

Hazard Classifications

Aquatic Acute 1 - Aquatic Chronic 1 - Asp. Tox. 1 - Eye Dam. 1 - Flam. Liq. 2 - Pyr. Liq. 1 - Skin Corr. 1B - STOT SE 3 - Water-react 1

Target Organs

Central nervous system

WGK

WGK 2

Flash Point(F)

1.4 °F

Flash Point(C)

-17 °C

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Information

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Silyl triflate precursors to cyclic alkynes and allenes serve as valuable synthetic building blocks. We report a concise and scalable synthetic approach to prepare the silyl triflate precursors to cyclohexyne and 1,2-cyclohexadiene. The strategy involves a retro-Brook rearrangement of an
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In this work, the self-assembly of a series of amphiphilic polystyrene-b-polyglycidol (PS-b-PGL) diblock copolymers in dioxane and dioxane/water mixtures is presented. The PS-b-PGL have an average degree of polymerization (DP) of PS block equal to 29 units and varied degrees
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Organic & biomolecular chemistry, 15(25), 5364-5372 (2017-06-16)
A series of 6,6-dihalo-2-azabicyclo[3.1.0]hexane and 7,7-dihalo-2-azabicyclo[4.1.0]heptane compounds were prepared by the reaction of dihalocarbene species with N-Boc-2,3-dihydro-1H-pyrroles or -1,2,3,4-tetrahydropyridines. Monochloro substrates were synthesised as well, using a chlorine-to-lithium exchange reaction. The behaviour of several aldehydes and ketones under reductive amination
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Bar-Shir A
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