New Bifunctional Reagents: 2-(Trimethylgermyl)allylcopper(I)-dimethyl sulfide and 2-(Trimethylstannyl)allylcopper(I)-dimethyl sulfide and their Conjugate Addition to α,β-Unsaturated Ketones

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Abstract
The preparation of each of the novel, functionalized allylcopper(I) reagents 2 and 3 is described. Reaction of these reagents with a series of cyclic α,β-unsaturated ketones produces good to excellent yields of the corresponding 3-(2-(trimethylgermyl)allyl)- and 3-(2-(trimethylstannyl)allyl)cycloalkanones, respectively.