The double bond was selectively transpositioned towards the boron moiety and only the E geometric isomer was formed as expected. We also turned our attention to the catalytic version of this reaction. And was found that with 10 mol% of PhSeCl catalyst and N-chlorosuccinimide (NCS, 1.1 equiv.) in MeCN, a comparable yield of 78% was obtained. Considering the potential inhibition effect of NCS as observed by the slow addition of NCS via a syringe pump gives an improved yield of 84% (eq 2).