Journal
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
Volume 56, Issue 21, Pages 6114-6123Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.iecr.7b00746
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Funding
- National Natural Science Foundation of China [21302014]
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology [BM2012110]
- Priority Academic Program Development (PAPD) of Jiangsu Higher Education Institutions
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PANI (polyaniline)-g-C3N4-TiO2 composite was prepared and utilized in the photocatalyzed synthesis of alpha-chloro aryl ketones via a radical-triggered domino process under oxygen atmosphere. This semiconductor photocatalyst showed good photocatalytic performance and chemoselectivity under visible light irradiation. A variety of aryl diazonium salts and aryl alkynes survived the reaction conditions well to afford the corresponding products in moderate to good yields. Scale-up (10 mmol) synthesis was also achieved. The recycle studies showed that the semiconductor composite could be readily recovered and reused for eight consecutive runs with a slight decrease in the catalytic activity. Control experiments were also performed, and a plausible catalytic mode was proposed.
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