期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 60, 期 10, 页码 5370-5376出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.202012720
关键词
C-C bond cleavage; cyanoanthracene catalyst; lanthanide photocatalysis; ring expansion; visible light
资金
- National Natural Science Foundation of China [21772121, 21971163]
A cerium-catalyzed aerobic oxidative ring expansion method using cyanoanthracene as a co-catalyst has been developed for the rapid construction of challenging macrolactones under visible light conditions, demonstrating the potential to simplify the generation of molecular complexity and enabling the concise synthesis of sonnerlactone.
We describe a cerium-catalyzed aerobic oxidative ring expansion for the expedient construction of synthetically challenging macrolactones under visible-light conditions. Cyanoanthracene has been employed as co-catalyst to accelerate the turnover of the cerium cycle leading to a fast conversion within 20 min of irradiation. Taking advantage of the high efficiency and operationally simple conditions, a collection of over 100 macrolactones equipped with ring systems ranging from 9- to 19-membered macrocycles have been prepared from simple building blocks. Moreover, the enabling potential of this strategy to simplify the generation of molecular complexity has been demonstrated through the concise synthesis of sonnerlactone.
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