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  • CuCl-mediated tandem CO insertion and annulation of 1,4-dilithio-1,3-dienes: formation of multiply substituted cyclopentadienones and/or their head-to-head dimers.

CuCl-mediated tandem CO insertion and annulation of 1,4-dilithio-1,3-dienes: formation of multiply substituted cyclopentadienones and/or their head-to-head dimers.

Chemical communications (Cambridge, England) (2008-03-21)
Qian Luo, Chao Wang, Wen-Xiong Zhang, Zhenfeng Xi
ABSTRACT

Mediated by CuCl, 1,4-dilithio-1,3-dienes reacted with carbon monoxide (CO) to generate multi-substituted cyclopentadienones and/or their head-to-head dimers, via tandem CO insertion and intra/intermolecular cycloaddition of organocopper compounds.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
Copper(I) chloride, ≥99.995% trace metals basis
Sigma-Aldrich
Copper(I) chloride, AnhydroBeads, ≥99.99% trace metals basis
Sigma-Aldrich
Copper(I) chloride, ReagentPlus®, purified, ≥99%
Sigma-Aldrich
Copper(I) chloride, reagent grade, 97%