Direct Reaction of Dibromoacetic Acid with Aldehydes Promoted by Samarium Diiodide: An Easy, Efficient, and Rapid Synthesis of (<i>E</i>)-α,β-Unsaturated Carboxylic Acids with Total Stereoselectivity<sup>†</sup>
作者:José M. Concellón、Carmen Concellón
DOI:10.1021/jo052236x
日期:2006.2.1
A promoted SmI2 direct reaction of dibromoacetic acid with different aldehydes, followed by an elimination reaction also promoted by samarium diiodide, affords (E)-alpha,beta-unsaturated carboxylic acids 2 with total stereoselectivity. A mechanism to explain this transformation is proposed.