One-Pot Synthesis of Quinazolinones from Anthranilamides and Aldehydes via p-Toluenesulfonic Acid Catalyzed Cyclocondensation and Phenyliodine Diacetate Mediated Oxidative Dehydrogenation
作者:Yunfei Du、Kang Zhao、Ran Cheng、Tianjian Guo、Daisy Zhang-Negrerie
DOI:10.1055/s-0033-1338521
日期:——
substituent, a new application of phenyliodine diacetate as an efficient dehydrogenative oxidant, and mild reaction conditions. A variety of 4(3H)-quinazolinones are synthesized conveniently in one pot from 2-aminobenzamides and aldehydes, via cyclization catalyzed by p-toluenesulfonic acid followed by oxidative dehydrogenation mediated by the hypervalent iodine compound phenyliodine diacetate [PhI(OAc)2, PIDA]
摘要 多种4(3 ħ)-quinazolinones在从2-氨基苯甲酰胺和醛一锅方便地合成,通过环化催化p -甲苯磺酸,然后通过所述高价碘化合物phenyliodine二乙酸酯[岛(OAC)介导的氧化脱氢2, PIDA]。所述方法的重点包括带有N-烷氧基取代基的喹唑啉酮的首次合成,苯基碘二乙酸酯作为有效的脱氢氧化剂的新应用以及温和的反应条件。 多种4(3 ħ)-quinazolinones在从2-氨基苯甲酰胺和醛一锅方便地合成,通过环化催化p -甲苯磺酸,然后通过所述高价碘化合物phenyliodine二乙酸酯[岛(OAC)介导的氧化脱氢2, PIDA]。所述方法的重点包括带有N-烷氧基取代基的喹唑啉酮的首次合成,苯基碘二乙酸酯作为有效的脱氢氧化剂的新应用以及温和的反应条件。