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CAS RN: 819050-89-0 | Product Number: B4549

Bis[rhodium(α,α,α',α'-tetramethyl-1,3-benzenedipropionic Acid)]

Purity: >96.0%(HPLC)
  • Rh2(esp)2
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Product Number B4549
Purity / Analysis Method >96.0%(HPLC)
Molecular Formula / Molecular Weight C__3__2H__4__0O__8Rh__2 = 758.48  
Physical State (20 deg.C) Solid
Store Under Inert Gas Store under inert gas
Condition to Avoid Air Sensitive
CAS RN 819050-89-0
Reaxys Registry Number 21493662
PubChem Substance ID 354333338
MDL Number


Appearance Yellow to Brown to Dark green powder to crystal
Purity(HPLC) min. 96.0 area%
Properties (reference)
Related Laws:
Transport Information:
HS Number 2843.90.0000
Synthesis of N-H Aziridines from Unactivated Olefins Using Hydroxylamine-O-Sulfonic Acid



Synthesis of 1,2-Diamine Derivatives Using a Rhodium Catalyst



Direct Synthesis of N-Unprotected Aziridines from Olefins Using a Rhodium Catalyst


Representative procedure: A round bottom flask is charged with alkene (0.5 mmol, 1.0 eq.) and CF3CH2OH (5 mL). To this solution at the specified temperature are added Rh2(esp)2 (3.8 mg, 5 µmol, 1 mol%) and 1 (0.119 g, 0.6 mmol, 1.2 eq.). The reaction is stirred at the specified temperature and monitored by TLC. More catalyst and 1 are added, if required. After completion, the reaction mixture is diluted with CH2Cl2(10 mL) and washed once with 15% aq. NaHCO3 solution (5 mL). The aqueous layer is extracted twice with CH2Cl2 (10 mL) and the combined organic portions are washed once with brine (5 mL), dried over Na2SO4, and concentrated in vacuo. The residue is purified on pre-packed SiO2 column.


PubMed Literature

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