One-step preparation of xanthones via Pd-catalyzed annulation of 1, 2-dibromoarenes and salicylaldehydes

S Wang, K Xie, Z Tan, X An, X Zhou, CC Guo…

文献索引：Wang, Sizhuo; Xie, Kai; Tan, Ze; An, Xiangyu; Zhou, Xingjian; Guo, Can-Cheng; Peng, Zhihong Chemical Communications, 2009 , # 42 p. 6469 - 6471

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摘要

Xanthones are important structural motifs in organic chemistry and they are widely present in natural products. 1 Though various methods are available for their synthesis, most of them either require rather advanced starting materials or involve multistep transformations. 2 One-step synthesis of xanthones from relatively simple starting materials is extremely rare and two recent syntheses reported by Okuma et al. and Zhao and Larock are such examples. 3 By reacting o- ...