Synthesis of new ferrocenyl amine sulfide and selenide complexes of group 10 metals and their catalytic activities toward selective hydrogenation, isomerization, and asymmetric Grignard cross-coupling reactions

Ahmad A. Naiini, Chung Kung Lai, Donald L. Ward, Carl H. Brubaker

Research output: Contribution to journalArticlepeer-review

20 Scopus citations

Abstract

Two series of previously unknown ferrocenyl amine sulfide and selenide ligands (S,R)-[ER]C5H4FeC5H3[CHMeNMe2] [ER] and [ER]C5H4FeC5H3[CH2NMe2]-[ER], where E = S and Se; R = Me, Ph, Bz, 4-tolyl, and 4-ClPh, have been prepared. Lithiation of (S)-[1-(dimethylamino)ethyl]ferrocene and [(dimethylamino)methyl] ferrocene first in the presence of ether and then TMEDA followed by treatment with different diselenides and disulfides resulted in the synthesis of these new ligands. Palladium and platinum dichloride adducts of these compounds have been prepared from a benzene solution of (PhCN)2MCl2 where M = Pd and Pt. The palladium complexes are active catalysts for selective hydrogenation of dienes to monoenes both under homogeneous and heterogeneous conditions. In the case of hydrogenation of 2,3-dimethyl-1,3-butadiene, isomerization has been observed. Nickel complexes of the new sulfide ligands were prepared in situ and used as catalysts for the asymmetric Grignard cross-coupling reactions. The possible structures of Pd and Pt complexes are discussed. The X-ray crystal structure was determined for [SMe]C5H4FeC5H3[CH2NMe2][SMe][PdCl2]; it reveals that the Pd atom is coordinated to the S and N atoms of the same cyclopentadienyl ring.

Original languageEnglish
Pages (from-to)73-90
Number of pages18
JournalJournal of Organometallic Chemistry
Volume390
Issue number1
DOIs
StatePublished - 26 Jun 1990

Fingerprint

Dive into the research topics of 'Synthesis of new ferrocenyl amine sulfide and selenide complexes of group 10 metals and their catalytic activities toward selective hydrogenation, isomerization, and asymmetric Grignard cross-coupling reactions'. Together they form a unique fingerprint.

Cite this