Copper-free Sonogashira coupling of 2-chloroquinolines with phenyl acetylene and quick annulation to benzo[b][1,6]naphthyridine derivatives in aqueous ammonia
作者:Atish Chandra、Bhawana Singh、Shraddha Upadhyay、Radhey M. Singh
DOI:10.1016/j.tet.2008.10.010
日期:2008.12
An efficient copper-free Sonogashira coupling of 2-chloroquinolines with phenyl acetylene to 2-ethynylquinolines is described. We further discussed the one pot facile annulation of 2-alkynylquinoline-3-carboxaldehydes to 3-phenylbenzo[b][1,6]naphthyridines in aqueous ammonia in excellent yield.
描述了
2-氯喹啉与苯基
乙炔到2-
乙炔基
喹啉的有效的无
铜Sonogashira偶联。我们进一步讨论了在
氨水中,2-炔基
喹啉-3-
甲醛与3-苯基苯并[ b ] [1,6]
萘啶的一锅法环氧化反应,收率很好。