Efficient Synthesis of 2-Substituted Quinolino[7', 8':5, 6]pyrano-[2, 3-d]pyrimidin-4(3<em>H</em>)-ones <em>via</em> Tandem Aza-Wittig Reaction

FANG Zheng-dong*, WANG Guo-hong and WANG Dun-jia

Chemical Research in Chinese Universities . 2009, (6): 866 -869 .