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Abstract
Although allylic thiocyanates undergo a facile thermal (3,3) isomerization to form the more stable allylic isothiocyanates1, this transformation has played a surprisingly minor role in organic synthesis. We have found that α,β-unsaturated esters (1) can be converted to α-isothiocyanatoacrylic esters (2) via an allylic (3,3) thiocyanate isomerization.