Paper Information

Journal:   JOURNAL OF THE IRANIAN CHEMICAL SOCIETY(JICS)   MARCH 2011 , Volume 8 , Number 1; Page(s) 240 To 246.
 
Paper: 

PHOSPHINE-BORANE COMPLEXES: IN SITU DEPROTECTION AND APPLICATION AS LIGANDS IN THE RH- OR PD-CATALYSED HYDROFORMYLATION REACTION

 
 
Author(s):  WILLIAMS D.B.G.*, KOTZE P.D.R., FERREIRA A.C., HOLZAPFEL C.W.
 
* DEPARTMENT OF CHEMISTRY, UNIVERSITY OF JOHANNESBURG, AUCKLAND PARK, JOHANNESBURG, SOUTH AFRICA
 
Abstract: 

Triarylphosphine-borane complexes are directly useful in the Rh-catalysed hydroformylation reaction of 1-octene (or Pdcatalysed hydroformylation of 1-pentene). Mild reaction conditions provide similar yields and selectivities of the anticipated aldehyde products to reactions making use of the corresponding free phosphines as ligands. The mono- or bidentate P-B adducts undergo in situ CO-mediated deprotection the produce the free phosphine ligands. The results demonstrate that phosphine-borane complexes may be directly applied to carbonylation reactions without a prior deprotection step, with little to no change in the reaction outcome.

 
Keyword(s): CARBONYLATION, HYDROFORMYLATION, PALLADIUM, PHOSPHANES, RHODIUM
 
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