sodium hydroxide in ethanol soln. ethanethiol and NaOH in EtOH was added dropwise to soln. (2-bromomethylphenyl)boronic acid pinacol ester in EtOH and stirreed for 30 min at room temp.; solvent was evapd., residue was purified by column chromy. on silica (hexane:EtOAc 20:1);

n-butyllithium in diethyl ether; hexane; toluene N2 atmosphere, addn. of n-BuLi in hexane to BrC6H4CH2SEt in ether (-78°C), warming to room temp., addn. of B(OMe)3 in ether (-78°C), warming to room temp., addn. of aq. H2SO4, evapn. of ether phase, addn. of (HOC(CH3)2)2 in toluene (2 h); fractional distn.; elem. anal.;