The development of new methods for the stereoselective formation of carbon-carbon double bonds is one of the most demanding subjects in organic chemistry. [1] Our group has reported the preparation of α,β-unsaturated esters with total E selectivity from α-halo-β-hydroxyesters promoted by either SmI 2 [2] or CrCl 2 . [3] Although these methodologies worked obtaining (E)-α,β-unsaturated esters in good yield and with total diastereoisomeric excess (de) ...
[Concellon, Jose M.; Rodriguez-Solla, Humberto; Huerta, Monica; Perez-Andres, Juan A. European Journal of Organic Chemistry, 2002 , # 11 p. 1839 - 1847]