从醛4开始,开发了一种新的四步合成路线,用于取代2,3-苯并二氮杂1 1,具有极高的总收率。该途径包括将各种芳族格氏试剂1,2-加成4,PCC氧化和6的烯烃基的好氧Wacker型氧化,然后将所得的1,5-二羰基7与N 2 H 4缩合。。异喹诺酮9时来代替酮醛基获得。通过X射线单晶衍射分析确认了关键结构。
从醛4开始,开发了一种新的四步合成路线,用于取代2,3-苯并二氮杂1 1,具有极高的总收率。该途径包括将各种芳族格氏试剂1,2-加成4,PCC氧化和6的烯烃基的好氧Wacker型氧化,然后将所得的1,5-二羰基7与N 2 H 4缩合。。异喹诺酮9时来代替酮醛基获得。通过X射线单晶衍射分析确认了关键结构。
One-pot access to 2-naphthols and benzofurans via the aerobic Wacker-type oxidation/intramolecular aldol cyclization
作者:Meng-Yang Chang、Chieh-Kai Chan、Shin-Ying Lin
DOI:10.1016/j.tet.2012.12.009
日期:2013.2
An aerobic Wacker-type oxidation/intramolecular aldol cyclization synthetic route toward two oxygenated 2-naphthols 3 and benzofurans 4 starting with skeleton 2 with good yields is described. The route has been carried by the one-pot transformation of the regioselective PdCl2/CuCl2-mediated Wacker oxidative cyclization of skeleton 2 with molecular oxygen under the alkaline methanolic condition. Skeleton 2 was prepared from skeleton 1 in moderate total yields via the known protocol. (c) 2012 Elsevier Ltd. All rights reserved.