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Condensation in the Presence of Copper (1) Chloride, A Study of ...... metal atom (calcium, magnesium), and especially a hydrogen 55 which L'is a chlorine atom, and L'is .... alkyl metal compound and a metal alkoxide, a metal amide, a N,N-dimethylformamide, ..... n-BuLi (2.6 M/hexane solution) was added dropwise over 1.