with 1, followed by alkylation of the intermediates with alkyl halides. The second used 1 to react with disulfide or diselenide. Both methods stereospecifically produced the title compounds in nearly quantitative yields under mild conditions. Stereospecific chalcogenation of the phosphoryl was proposed as the key step in these reactions.
P被容易地制备-Stereogenic
硫代磷酸酯和phosphonoselenoates利用ř P -薄荷基苯基亚1由两种方法。第一种方法使用元素
硫或
硒与1进行反应,然后用卤代烷烷基化中间体。第二个用于1与二
硫化物或二
硒化物反应。两种方法在温和条件下以接近定量的产率立体定向产生标题化合物。
磷酰基的立体定向
硫属元素化被提出作为这些反应中的关键步骤。