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CoBr2-TMTU-zinc catalysed-Pauson-Khand reaction.

Chemical communications (Cambridge, England) (2012-03-24)
Yuefan Wang, Lingmin Xu, Ruocheng Yu, Jiahua Chen, Zhen Yang
PMID22441555
ABSTRACT

A cobalt-TMTU complex, derived from the in situ reduction of CoBr(2) with Zn in the presence of TMTU, can catalyze Pauson-Khand reaction at a balloon pressure of CO, which enables the synthesis of structurally diverse cyclopentenones. This catalytic system works efficiently for both intermolecular and intramolecular PK reactions.

MATERIALS
Product Number
Brand
Product Description
334022
Sigma-Aldrich
Cobalt(II) bromide, 99%
115169
Sigma-Aldrich
Tetramethylthiourea, 98%
427136
Sigma-Aldrich
Cobalt(II) bromide, AnhydroBeads™, −10 mesh, 99.99% trace metals basis