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its all about organometallic chemistry of zinc and copper metal

Reaction of

Reaction of Organocuprates Tandem 1,4-addition – Enolate Trapping • One of the fundamental contributions of organocopper chemistry to organic synthesis is the ability to transfer ligands in a 1,4-manner to α,β-unsaturated C=O compounds to produce enolate anions in a regioselective manner. • These may be trapped by a variety of electrophiles in tandemtype reactions. • The enolates produced from conjugate additions of organocuprates to α, β-unsaturated C=O compounds possess 2 nucleophilic sites, reacting either at the oxygen or the carbon terminus. • Electrophiles having a high affinity toward oxygen such as chlorosilanes and phosphorochloridates tend to give O- trapping products, whereas alkyl halides, aldehydes, α- halocarbonyl compounds, and halogens furnish C-trapping products.

Reaction of Organocuprates Tandem 1,4-addition – Enolate Trapping

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