作者:Reza-Ali Fallahpour、Edwin C. Constable
DOI:10.1039/a704295g
日期:——
4-Substituted-2,6-diacetylpyridines 2â4 have been
synthesised; by using the Kröhnke-methodology, chalcone and
methylacylpyridinium salts have been reacted to yield
4â²-ethoxy-2,2â²:6â²,2â³-terpyridines 5â7.
These novel 2,2â²:6â²,2â³-terpyridines are functionalised
at C(4â²) and possess substituents at C(4), C(5) and C(6) of both
terminal pyridines, respectively. The ethyl ether protecting group has
been cleaved to obtain
4â²-hydroxy-2,2â²:6â²,2â³-terpyridine 8.
4-取代-2,6-二乙酰吡啶2-4已被
合成的;通过使用 Kröhnke 方法、查尔酮和
甲基酰基吡啶鎓盐已反应生成
4-乙氧基-2,2-:6-,2-三联吡啶5-7。
这些新颖的 2,2â²:6â²,2â³-三联吡啶被功能化
在C(4-2)处并且在C(4)、C(5)和C(6)处都具有取代基
分别为末端吡啶。乙醚保护基团具有
被裂解以获得
4-羟基-2,2-:6-,2-三联吡啶 8.