Abstract
| - 3-(Methoxycarbonyl)-2-halo-1,3(Z)-dienes were preparedhighly stereoselectively via SN2‘-type addition−eliminationreactions of 3-(methoxycarbonyl)-1,2-allen-4-ols with MX.These products may easily undergo Negishi or Sonogashiracoupling reactions to yield a series of stereodefined polysubstituted (E)-1,3-dienes.
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