Sodium borohydride in DMF is able to reduce elemental selenium in the presence of ethanol. Alkylation of the species resulting from the reaction of 2:1 molar equivalents of NaBH4/Se allows the selective synthesis, under very mild conditions, of symmetrical dialkyl selenides. Addition of formic acid, prior to that of the electrophile, permits the synthesis of the corresponding selenols.
在
DMF中,
硼氢化钠能够在
乙醇存在下还原元素
硒。将2:1摩尔比的NaBH4/Se反应生成的物质进行烷基化,可以在非常温和的条件下选择性合成对称的二烷基
硒化物。在加入亲电试剂之前添加
甲酸,可以合成相应的
硒醇。