Organometallic reactions. Part IX. The preparation and reactions of trialkyl-lead alkoxides
Abstract
A number of trialkyl-lead alkoxides have been prepared by treating the corresponding lead halide with a sodium alkoxide, or lead hydroxide (or methoxide) with an alcohol.
These alkoxides undergo substitution reactions with phthalic anhydride giving alkyl trialkyl-lead phthalates, and with chloroform, bromoform, and cyclopentadiene to yield trihalogenomethyl- and cyclopentadienyl-lead compounds.
The alkoxides add to multiply-bonded reagents such as isocyanates, carbodi-imides, isothiocyanates, carbon di-sulphide, carbon dioxide, trichloroacetonitrile, acrylonitrile, and chloral, to give 1 : 1-adducts. The adducts with hexachloroacetone and bromal decompose at room temperature, providing an alternative route to the trihalogeno-methyl-lead compounds.