高等学校化学研究 ›› 2010, Vol. 26 ›› Issue (6): 933-936.
AN Lin1, LIU Dong-mei2, WANG Jin-xiang2 and YAN Chao-guo2*
AN Lin1, LIU Dong-mei2, WANG Jin-xiang2 and YAN Chao-guo2*
摘要: Under microwave irradiation, 2,2'-alkoxy-bridging or 4,4'-alkoxy-bridging dibenzaldehydes reacted with 4-hydroxycoumarin in DMF to give a series of 3,3',3″,3'″-o- and 3,3',3″,3'″-p-phenylenedimethylidinetetrakis-(4- hydroxy-2H-1-benzopyran-2-ones) in moderate yields. The structures of the synthetic coumarin derivatives were characterized with IR, 1H NMR and MS spectroscopy as well as X-ray single crystallography.