The hydropalladation of di- and tri-olefins to give η3-allylic palladium complexes
- 1 January 1976
- journal article
- Published by Royal Society of Chemistry (RSC) in J. Chem. Soc., Dalton Trans.
- No. 21,p. 2156-2160
- https://doi.org/10.1039/dt9760002156
Abstract
Complexesofthetype[PdHL2]+[IIa:L2=1,2-bis(diphenylphosphino)ethaneandIIb;L2= 1,2-bis(diphenylarsino)-ethane], generated in situ by treatment of [{[graphic omitted]Me5)Cl}2] with Ag[PF6] and L2, were treated with penta-1,3-diene, isoprene, cyclopentadiene, cyclohexa-1,3-diene, and cyclo-octa-1,3-diene to give the appropriate complexes of the type [Pd(all)L2][PF6](all = 1–3-η-allylic ligand) by addition of Pd–H to a double bond. Cycle-octa-1,5-diene underwent isomerisation to give the same 1–3-η-cycle-octenyl complex obtained from cycle-octa-l,3-diene. Cycloheptatriene gave a mixture of two η3-cycloheptadienyl complexes, while cyclo-dodeca-1.5.9.triene gave an η3-cyclododecadienyl complex. The complexes were characterised by 1H, 13C, and 31P n.m.r. spectroscopy.Keywords
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