title: An efficient approach to functionalized benzo[a]xanthones through reactions of 2-methyl-3-(1-alkynyl)chromones with electron-deficient chromone-fused dienes.
abstract: An efficient tandem process was developed to synthesize diversified benzo[a]xanthones from 2-methyl-3-(1-alkynyl)chromones with electron-deficient chromone-fused dienes. This unusual reaction, involving multiple steps and not requiring the use of transition metal catalysts or an inert atmosphere, results in the formation of three new C-C bonds and one C-O bond.
authors: State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Science, 555 Zu Chong Zhi Road, Shanghai 201203, China.
authors: Jian
authors: J
authors: Gong
authors: Fuchun
authors: F
authors: Xie
authors: Hong
authors: H
authors: Chen
authors: Youhong
authors: Y
authors: Hu
mesh_terms: D000480:Alkynes / Q000737:chemistry*; D002384:Catalysis; D002867:Chromones / Q000737:chemistry*; D020650:Combinatorial Chemistry Techniques; D015394:Molecular Structure; D044004:Xanthones / Q000138:chemical synthesis* / Q000737:chemistry
chemical_list: D000480:Alkynes; D002867:Chromones; D044004:Xanthones