Synthesis of Isoquinoline-Fused Quinazolinones through Ag(I)-Catalyzed Cascade Annulation of 2-Aminobenzamides and 2-Alkynylbenzaldehydes
作者:Mamoru Koketsu、Amol Sonawane、Yunnus Shaikh、Dinesh Garud
DOI:10.1055/s-0037-1610910
日期:2019.1
Abstract A new route for the expedient synthesis of a specific regioisomer of isoquinoline-fused quinazolinones is reported. Silver(I)-catalyzed cascade cyclization of 2-aminobenzamides and 2-alkynylbenzaldehydes followed by in situ oxidation gives 12-butyl- or 12-aryl-6H-isoquinolino[2,1-a]quinazolin-6-ones in 69–91% yields. The structure of the isoquinoline-fused quinazolinone was confirmed by X-ray
摘要 据报道,方便合成异喹啉稠合的喹唑啉酮的特定区域异构体的新途径。银(I) -催化级联的2-氨基苯甲酰胺和2- alkynylbenzaldehydes环化,随后在原位氧化得到12丁基或12芳基-6- ħ -isoquinolino [2,1-一个]喹唑啉-6-酮在69-产率91%。通过X射线晶体学分析证实了异喹啉稠合的喹唑啉酮的结构。 据报道,方便合成异喹啉稠合的喹唑啉酮的特定区域异构体的新途径。银(I) -催化级联的2-氨基苯甲酰胺和2- alkynylbenzaldehydes环化,随后在原位氧化得到12丁基或12芳基-6- ħ -isoquinolino [2,1-一个]喹唑啉-6-酮在69-产率91%。通过X射线晶体学分析证实了异喹啉稠合的喹唑啉酮的结构。