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Merck
CN

658243

Lithium pyrrolidinoborohydride solution

1 M in THF

Synonym(s):

Lithium trihydro-1-pyrrolidinylborate

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About This Item

Empirical Formula (Hill Notation):
C4H11BLiN
CAS Number:
144188-76-1
Molecular Weight:
90.89
NACRES:
NA.22
PubChem Substance ID:
24884339
UNSPSC Code:
12352005
MDL number:
MFCD07784405

Key Documents

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InChI

1S/C4H11BN.Li/c5-6-3-1-2-4-6;/h1-4H2,5H3;/q-1;+1

SMILES string

[Li+].[H][B-]([H])([H])N1CCCC1

InChI key

CUBZYJJJUFGOBJ-UHFFFAOYSA-N

reaction suitability

reagent type: reductant

concentration

1 M in THF

refractive index

n20/D 1.425

density

0.890 g/mL at 25 °C

storage temp.

2-8°C

Application

Lithium Aminoborohydride (LAB) Reagents

  • Reducing agent for reduction of carbonic and carboxylic acid derivatives
  • Reagent for reduction-amination reactions
Capable of reducing a variety of fuctional groups.
LABs can transfer the amine moiety, as in the case of the reaction with halopyridines and primary alkyl methanesulfonates.

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Danger

Hazard Classifications

Acute Tox. 4 Oral - Carc. 2 - Eye Irrit. 2 - Flam. Liq. 2 - STOT SE 3

target_organs

Respiratory system

supp_hazards

EUH019

Storage Class

4.3 - Hazardous materials which set free flammable gases upon contact with water

wgk

WGK 3

flash_point_f

1.4 °F - closed cup

flash_point_c

-17.0 °C - closed cup

Regulatory Information

危险化学品
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Certificates of Analysis (COA)

Lot/Batch Number
SHBK1186
SHBH3415V
SHBG1936V
SHBD3545V
SHBC7085

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Saikia, P.P.
Synlett, 995-995 (2007)
S Thomas et al.
Organic letters, 3(24), 3915-3918 (2001-11-27)
Lithium aminoborohydride (LAB) reagents initiate the amination or reduction of alkyl methanesulfonate esters, as dictated by reaction conditions. Alkyl methanesulfonate esters treated with unhindered LABs provide tertiary amines in excellent yield. Reduction to the corresponding alkane is achieved using a
Fisher, G. B. et al
The Journal of Organic Chemistry, 59, 6378-6378 (1994)
Pasumansky, L. et al
Aldrichimica Acta, 38, 61-61 (2005)
Shannon Thomas et al.
Organic letters, 5(21), 3867-3870 (2003-10-11)
[reaction: see text] Lithium aminoborohydride (LAB) reagents promote the amination of 2-fluoropyridine under mild reaction conditions, providing 2-(dialkylamino)pyridines in excellent yield and purity. Treatment of 2-fluoropyridine with 1.1 equiv of lithium aminoborohydride at room temperature affords complete conversion after 1

Articles

Lithium Aminoborohydride (LAB) Reagents

Lithium aminoborohydride (LAB) reagents are a new class of powerful and selective reagents developed in the laboratory of Professor Bakthan Singaram at the University of California, Santa Cruz.

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Singaram Group – Professor Product Portal

New asymmetric methodology meets the continuous demand for optically active compounds in various fields.

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