Dehydrative Reduction: A Highly Diastereoselective Synthesis of <i>syn</i>-Bisaryl(or Heteroaryl) Dihydrobenzoxathiins and Benzodioxane
作者:Seongkon Kim、Jane Y. Wu、Helen Y. Chen、Frank DiNinno
DOI:10.1021/ol0274763
日期:2003.3.1
[GRAPHICS]TFA/Et3SIH-mediated cyclization of thioketones 5 derived from the reaction of functionalized thiophenols (catechols) with bromo ketones gave syn 2,3-bisaryl(or heteroaryl) dihydrobenzoxathiins and benzodioxane 1 with total diastereoselectivity (>99:1), in excellent yields.