Synthesis of Bis(diphenylphosphinio)octahydro-closo-decaborates L2B10H8 (L = Ph2PH) and 1-(Diphenylphosphinio)nonahydro-closo-decaborates(1-) [1-LB10H9]- (L = Ph2PH, Ph2P(OH)) by the Palladium-Catalyzed Reaction of Ph2PH with 1-Diazononahydro-closo-decaborate(1-) [1-N2B10H9]-
- 1 January 1999
- journal article
- Published by Institute of Organic Chemistry & Biochemistry in Collection of Czechoslovak Chemical Communications
- Vol. 64 (5) , 856-864
- https://doi.org/10.1135/cccc19990856
Abstract
(PPh3)2PdCl2 and CuI, used in low concentration as catalysts, favour the replacement of the diazo group of [1-N2B10H9]- by Ph2PH. Owing to its instability [1-(Ph2PH)B10H9]- could not be isolated in a pure form and was obtained as a mixture with [1-Ph2P(OH)B10H9]-, but pure samples of [1-Ph2P(OH)B10H9]- were easily obtainable. (PPh3)2PdCl2 also acted as a reactant, the reduction of Pd(II) to Pd(0) allowing the formation of the neutral substituted boranes 1,6-(Ph2PH)2B10H8 and 1,10-(Ph2PH)2B10H8. These two isomers were separated by chromatography. All the products were characterized by 11B and 31P NMR and mass spectrometry techniques.Keywords
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