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Ortho-, metaand para-chloromethylstyrenes (4ac) were prepared by a three-step sequence starting from the commercial ortho-, meta-and para-br6mobenzyl bromides (la -c), which were transformed into the methoxymethyl derivatives (2ac). Coupling of the corresponding Grignard compounds with vinylbromide in presence of a transition metal catalyst led to the methoxymethyl styrenes (3a -c), which were transformed into the desired products by reaction with BC4. IR, lH and 13C NMR spectra of the 3 isomers were studied.

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