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Meng, Qiang; Chen, Fei; Yu, Wei; Han, Bing . (2017). Copper-Catalyzed Cascade Cyclization of 1,7-Enynes toward Trifluoromethyl-Substituted 1′ <i>H</i> -Spiro[azirine-2,4′-quinolin]-2′(3′ <i>H</i> )-ones. Organic Letters, (), acs.orglett.7b02453–. doi:10.1021/acs.orglett.7b02453 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research