73727-99-8

Basic information

• Product Name: Pd(1,2-bis(diphenylphosphinoethane))(OCOMe)2
• Synonyms: Pd(1,2-bis(diphenylphosphinoethane))(OCOMe)2
• CAS NO: 73727-99-8
• Molecular Weight: 622.933
• Mol File: 73727-99-8.mol
• Article Data: 4

Chemical Properties

• CAS DataBase Reference: Pd(1,2-bis(diphenylphosphinoethane))(OCOMe)2(CAS DataBase Reference)
• NIST Chemistry Reference: Pd(1,2-bis(diphenylphosphinoethane))(OCOMe)2(73727-99-8)
• EPA Substance Registry System: Pd(1,2-bis(diphenylphosphinoethane))(OCOMe)2(73727-99-8)

Safety Data

• Hazardous Substances Data: 73727-99-8(Hazardous Substances Data)

Upstream product

• 3375-31-3 palladium diacetate 
• 14724-41-5 diacetato(2,2'-bipyridine)palladium(II) 
• 1663-45-2 1,2-bis-(diphenylphosphino)ethane 

Downstream Products

• 3375-31-3 palladium diacetate 
• 7440-05-3 palladium 
• 399039-48-6 [Pd(CH₃C₆H₄SO₂O)2(1,2-bis(diphenylphosphino)ethane)] 

Relevant articles and documents

Taking too many precautions in making a catalyst is never a loss of time: A lesson we learned at our own expense

The reaction in MeOH between the bis-chelate complex [Pd(dppe)2](OAc)2 and Pd(OAc)2 to give the monochelate product Pd(OAc)2(dppe) is assisted by free acetate ion, and its rate is proportional to the concentrations of both reagents (dppe = 1,2-bis(diphenylphosphino)-ethane). The aggregation of Pd(OAc)2 in CH2Cl2 and the low dielectric constant of this solvent are proposed to be important factors in accelerating the formation of Pd(OAc)2(dppe) in CH2Cl2.

In situ preparation of palladium diphosphane catalysts

The efficiency of a superficially simple preparation procedure for palladium-diphosphane catalysts has been examined. Preparation of Pd(dppe)X2 in situ by mixing equimolar amounts of Pd(OAc)2 and 1,2-bis(diphenylphosphanyl)-ethane (dppe) in methanol in the first step unexpectedly affords the bischelate [Pd(dppe)2](OAc)2 as the (main) kinetic product. Subsequently, the slow reaction of [Pd(dppe)2]-(OAc)2 and unreacted Pd(OAc)2 forms the thermodynamically favored monochelate [Pd(dppe)(OAc)2] (following first-order kinetics). Conversion of the bischelate into the monochelate stops after addition of strong acid (HX) in the second step, thus affording a mixture of active - Pd(dppe)X2 - virtually inactive - [Pd(dppe)2]X2 - and unstable - PdX2 - species. This procedure was also evaluated for some other diphosphane ligands and methods are given to overcome the encountered problem.