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302473

Sigma-Aldrich

Chlorobis(cyclooctene)rhodium(I),dimer

98%

Synonym(s):

[Rh(coe)2Cl]2

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About This Item

Empirical Formula (Hill Notation):
C32H56Cl2Rh2
CAS Number:
Molecular Weight:
717.50
MDL number:
UNSPSC Code:
12161600
PubChem Substance ID:
NACRES:
NA.22

Assay

98%

form

powder

reaction suitability

core: rhodium
reagent type: catalyst

mp

190 °C (dec.) (lit.)

SMILES string

Cl[Rh].Cl[Rh].C1CCCC=CCC1.C2CCCC=CCC2.C3CCCC=CCC3.C4CCCC=CCC4

InChI

1S/4C8H14.2ClH.2Rh/c4*1-2-4-6-8-7-5-3-1;;;;/h4*1-2H,3-8H2;2*1H;;/q;;;;;;2*+1/p-2/b4*2-1-;;;;

InChI key

GQPAPAIPOLEZHT-XFCUKONHSA-L

Application

Chlorobis(cyclooctene)rhodium(I),dimer can be used as a catalyst:
  • To synthesize enantioenriched gem-diaryl sulfonates by asymmetric 1,4-addition of aryl boronic acids to α,β-unsaturated sulfonyl compounds.
  • In direct C-arylation of N-unprotected indoles and pyrroles.
  • In the carboxylation of arenes via C-H bond activation.

Pictograms

Exclamation mark

Signal Word

Warning

Hazard Classifications

Acute Tox. 4 Dermal - Acute Tox. 4 Inhalation - Acute Tox. 4 Oral - 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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Substrate control of stereoselection in the rhodium (I) catalyzed intramolecular [4+ 2] cycloaddition reaction
O'Mahony DJR, et al.
Organic & Biomolecular Chemistry, 1(12), 2038-2040 (2003)
Rhodium-catalyzed C-C bond cleavage reactions-an update
Korotvicka A, et al.
Current Organic Chemistry, 16(10), 1170-1214 (2012)
Direct C-arylation of free (NH)-indoles and pyrroles catalyzed by Ar- Rh (III) complexes assembled in situ
Wang X, et al.
Journal of the American Chemical Society, 127(14), 4996-4997 (2005)
Chiral Phosphite-Olefin Ligands: Application in Rh-Catalyzed Asymmetric 1, 4-Addition of Arylboronic Acids to beta-Aryl-alpha, beta-unsaturated Sulfonates
Yue-Na Y and Ming-Hua X
Acta Chimica Sinica , 72(7), 815-819 (2014)
Rhodium (I)-catalyzed direct carboxylation of arenes with CO2 via chelation-assisted C- H bond activation
Mizuno H, et al.
Journal of the American Chemical Society, 133(5), 1251-1253 (2011)

Articles

Discover the role of boronic acids in enantioenriched C(sp2)–C(sp2) product synthesis, specifically the rhodium-catalyzed Suzuki–Miyaura-type arylations of allylic halides and cyclobutenes.

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