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531634

Sigma-Aldrich

Bis(pyridine)iodonium tetrafluoroborate

Synonym(s):

Barluenga reagent

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About This Item

Empirical Formula (Hill Notation):
C10H10BF4IN2
CAS Number:
15656-28-7
Molecular Weight:
371.91
MDL number:
MFCD03703393
UNSPSC Code:
12352005
PubChem Substance ID:
24877831
NACRES:
NA.22

reaction suitability

reagent type: oxidant

mp

137-141 °C (lit.)

storage temp.

2-8°C

SMILES string

[I+].F[B-](F)(F)F.c1ccncc1.c2ccncc2

InChI

1S/2C5H5N.BF4.I/c2*1-2-4-6-5-3-1;2-1(3,4)5;/h2*1-5H;;/q;;-1;+1

InChI key

JBVUIHBKNVHCKK-UHFFFAOYSA-N

General description

Bis(pyridine)iodonium Tetrafluoroborate (Barluenga′s reagent) is a mild iodinating and oxidizing reagent capable of selectively reacting with a wide range of unsaturated substrates and tolerates a variety of functional groups.

Application

Bis(pyridine)iodonium Tetrafluoroborate reacts with acetonides derived from simple terpenes to accomplish selective iodofunctionalization with excellent regio- and diastereofacial control. It has been used as a reactant involved in:

Pictograms

Exclamation mark
GHS07

Signal Word

Warning

Hazard Statements

H315,H319,H335

Hazard Classifications

Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3

Target Organs

Respiratory system

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Total diastereofacial selective iodofunctionalization of terpene derivatives based on Ipy2BF4
Jose Barluenga et al.
The Journal of Organic Chemistry, 68(17), 6583-6586 (2003)
José Barluenga et al.
The Journal of organic chemistry, 68(17), 6583-6586 (2003-08-16)
Acetonides 1, easily obtained from simple terpenes, react with bispyridine iodonium (I) tetrafluoroborate (Ipy(2)BF(4)) and tetrafluoroboric acid in the presence of nucleophiles to give the corresponding adducts 2 with complete regio and diastereofacial control. Acetonides 1 containing a properly located
?-Iodination of enaminones with bis(pyridine)iodonium(I) tetrafluoroborate
Campos, P. J. et al
Tetrahedron Letters, 38(48), 8397-8400 (1997)
José Barluenga et al.
Journal of the American Chemical Society, 125(30), 9028-9029 (2004-09-17)
Iodonium ions liberated from bis(pyridine)iodonium(I) tetrafluoroborate react with ortho-alkynyl-substituted carbonyl compounds and different nucleophiles to give valuable iodinated heterocycles at room temperature, through a new and metal-free reaction sequence. Interestingly, the nature of the nucleophile can be widely modified, and
Regioselective synthesis of substituted naphthalenes: a novel de novo approach based on a metal-free protocol for stepwise cycloaddition of o-alkynylbenzaldehyde derivatives with either alkynes or alkenes
Jose Barluenga et al.
Organic Letters, 5(22), 4121-4123 (2003)
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