β-hydroxysulfones from inexpensive and readily available terminal alkynes and sodium sulfinates via a consecutive one-pot reaction in an aqueous medium under mild conditions is described. The intermediates, β-keto sulfones, generated from an aerobic oxysulfonylation of terminal alkynes and sodium sulfinates catalyzed by an iron salt in MeOH/H2O (v : v = 3 : 1) at 50 °C, were subsequently reduced by a
描述了在温和条件下在
水性介质中通过连续的一锅反应由廉价且容易获得的末端
炔烃和亚
磺酸钠高度对映选择性合成β-羟基砜的方法。随后在50°C下由
铁盐在MeOH / H 2 O(v:v = 3:1)中催化的末端
炔烃和亚
磺酸钠的需氧氧磺酰化反应生成的中间体β-酮砜HCOONa作为氢源的催化不对称转移加氢反应。以高收率和高达99.9%ee值获得了各种手性β-羟基砜。这种一锅法工艺很容易按比例放大以进行克级合成。