Calcium cuprate reagents

Scheme 9.3 Reactions of organocalcium and calcium cuprate reagents prepared from chloromethylated polystyrene and Rieke calcium.

Table 9.6 Reactions of calcium cuprate reagents from chloromethylated polystyrene and Rieke calcium with various electrophiles.

Presumably, this new complex is a calcium cuprate. Reaction of the organocalcium reagent prepared from an organic halide and the highly reactive calcium, with benzoyl chloride in the absence of a Cu(I) salt, afforded a complex mixture of products. However, in the presence of a Cu(I) salt, high yields of ketone formation were observed. Table 9.2 presents some of the ketone formation reactions of the calcium cuprates with benzoyl chloride. 

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