Synthesis of 4‐Alkyl‐1(2<i>H</i>)‐phthalazinones and 4‐Alkyl‐2,3‐benzoxazin‐1‐ones via Ring Cleavage of 3‐Substituted<i>N</i>‐Alkylated‐3‐hydroxyisoindolin‐1‐ones
作者:Tae Gyu Chun、Kyung Soon Kim、Sangku Lee、Tae‐Sook Jeong、Hee‐Yoon Lee、Yong Hae Kim、Woo Song Lee
DOI:10.1081/scc-120030319
日期:2004.12.31
N-Alkyl (Me, Et, i-Pr, t-Bu)-substituted phthalimdes 5a-d were easily transformed to 1(2H)-phthalazinones 8d-i and 2,3-benzoxazin-1-ones 9d,f,and j via a one-pot addition-decyclization-cyclocondensation process.