An efficient synthesis of benzo[b]benzofurano[2,3-e]-[1,6]naphthyridine-8-ones
Autor: | Wei Zhao, Yong-Yang Wang, Jian-Ying Wu, Dan Wu, Dao-Lin Wang |
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Rok vydání: | 2015 |
Předmět: | |
Zdroj: | Chinese Chemical Letters. 26:251-254 |
ISSN: | 1001-8417 |
DOI: | 10.1016/j.cclet.2014.11.005 |
Popis: | An efficient method for the synthesis of benzo[b]benzofurano[2,3-e][1,6]naphthyridine-8-one derivatives has been developed via Pictet-Spengler reaction of 4-(3-aminobenzofuran-2-yl)quinoline-2-ones, which could be obtained from alkylation of 4-bromomethylquinoline-2-ones with salicylonitrile and subsequent Thorpe-Ziegler isomerization, with aromatic aldehydes under p-TsOH as catalyst in good yields. |
Databáze: | OpenAIRE |
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