- A new tetratertiary phosphine ligand and its use in Pd-catalyzed allylic substitution
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A new tetraphosphine, the cis-cis-cis-1,2,3,4-tetrakis(diphenylphosphinomethyl)cyclopentane (Tedicyp) 1 has been synthesized, characterized, and used in Pd-catalyzed allylic substitutions. The Tedicyp was easily prepared in seven steps from the commercially available himic anhydride. The structure of the complex Tedicyp-borane was determined by X-ray analysis. The tetraphosphine in combination with [Pd(η3-C3H5)Cl]2 affords a very efficient catalyst for allylic substitution of several allylic acetates. Under mild conditions, very high turnover numbers and turnover frequencies have been obtained.
- Laurenti,Feuerstein,Pepe,Doucet,Santelli
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p. 1633 - 1637
(2007/10/03)
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