From organyltellurenyl halides and vinylic Grignard reagents

2 From organyltellurenyl halides and vinylic Grignard reagents 

This reaction is an application of the general method for the preparation of unsymmet-rical tellurides (see Section 3.1.3.5). The teUurenyl halide is prepared in situ by halogeno-lysis of the corresponding ditelluride.  

the solvent is evaporated, and the residue is treated with saturated aqueous NH4CI, extracted with ether, dried (MgS04) evaporated. The product is purified by Si02 column chromatography (elution with benzene/hexane, 9 1). 

The obtained ethenylphenyltelluride can be deprotonated with strong hindered bases (LDCA) giving the lithium derivatives which react with electrophiles.  

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