Highly efficient regio- and stereoselective dimerization of (hetero)aromatic terminal alkynes by organo rare-earth metal catalysts

Shaozhong Ge, Victor F. Quiroga Norambuena, Bart Hessen*

*Bijbehorende auteur voor dit werk

OnderzoeksoutputAcademicpeer review

41 Citaten (Scopus)
1664 Downloads (Pure)


The yttrium dialkyl complex [(L)Y(CH2SiMe3)(2)] (1, L = 1, 4, 6-trimethyl-N-(2-pyrrolidin-1-ylethyl)-1, 4-diazepan-6-amine), activated by (PhNMe2H)(B(C6F5)(4)), catalytically dimerizes a range of (hetero)aromatic alkynes to Z-enynes with 100% selectivity and high rates. Catalyst turnovers up to 2000 were readily achieved in preparative scale (5-10 mmol) reactions. For comparison, the related E-enynes were produced with a permethyl lanthanocene catalyst.

Originele taal-2English
Pagina's (van-tot)6508-6510
Aantal pagina's3
Nummer van het tijdschrift26
StatusPublished - 17-dec-2007

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