Metal-free new synthesis of 1,3-naphthoxazines via intramolecular cross dehydrogenative-coupling reaction of 1-(α-aminoalkyl)-2-naphthols using hypervalent iodine(III) reagent
作者:Nitin A. Waghmode、Amit H. Kalbandhe、Prerana B. Thorat、Nandkishor N. Karade
DOI:10.1016/j.tetlet.2015.12.117
日期:2016.2
A series of 1-(α-aminoalkyl)-2-naphthols were synthesized via three-component Betti reaction of β-naphthol, aldehyde, and cyclic secondary amine under reflux conditions. The subsequent reactions of 1-(α-aminoalkyl)-2-naphthols with (diacetoxyiodo)benzene resulted in the formation of 1,3-napthoxazines. This reaction demonstrates the formation of CO bond via cross dehydrogenative-coupling (CDC) under
通过β-萘酚,醛和环状仲胺在回流条件下的三组分Betti反应,合成了一系列1-(α-氨基烷基)-2-萘酚。1-(α-氨基烷基)-2-萘酚与(二乙酰氧基碘)苯的后续反应导致形成1,3-萘并恶嗪。该反应表明在无过渡金属的条件下通过交叉脱氢偶联(CDC)形成了C O键。