Efficient Methods for the Preparation of Alkyl−Aryl and Symmetrical or Unsymmetrical Dialkyl Ethers between Alcohols and Phenols or Two Alcohols by Oxidation−Reduction Condensation
作者:Taichi Shintou、Teruaki Mukaiyama
DOI:10.1021/ja0487877
日期:2004.6.1
generated in situ from chlorodiphenylphosphine (2) and alcohols, 2,6-dimethyl-1,4-benzoquinone (3), and phenols proceeds smoothly to afford alkyl-aryl ethers in good to high yields under neutral conditions. In a similar fashion, a new and efficient method for the preparation of symmetrical or unsymmetrical dialkyl ethers in good to high yields is established via tetrafluoro-1,4-benzoquinone (fluoranil) (4)
通过烷氧基二苯基膦(二苯基亚膦酸酯)(1)进行氧化还原缩合,由氯二苯基膦(2)和醇、2,6-二甲基-1,4-苯醌(3)原位生成,苯酚顺利进行,得到烷基芳基醚在中性条件下产量良好。以类似的方式,通过四氟-1,4-苯醌(荧苯胺)(4)、醇类和 1 由( n) BuLi 处理的醇和 2. 该方法也适用于具有保留或反转构型的手性仲醇或叔醇的醚化。通过处理手性烷氧基二苯基膦和非手性醇得到反相醚,