A base-promoted dearomative annulation between N-2-pyridylamidine and an atmospheric pressure of CO2 was developed, affording a series of pyrido[1,2-a]-1,3,5-triazin-4-ones in moderate to excellent yields. CO2 served as a carbonyl source, releasing H2O as a solely clean byproduct. Moreover, no dehydrating reagent and transition-metal catalyst were required in this procedure. Thus, it represents a green
开发了碱促进的N -2-
吡啶基lam啶与大气压CO 2之间的
脱芳香环化反应,提供了一系列中等至极好的
吡啶并[1,2 - a ] -1,3,5-triazin-4-ones产量。CO 2用作羰基源,释放H 2 O作为纯净的副产物。而且,在该程序中不需要
脱水剂和过渡
金属
催化剂。因此,它代表了访问此类框架的绿色,可持续和直接途径。