A convenient one-pot Cu(I)-catalyzed strategy for regioselective synthesis of trisubstituted furan derivatives has been developed via (2-furyl) carbenecomplexes. This process has opened a new synthetic route to a variety of α-carbonyl furans using air as the oxidant affording furans in good yields.
N-chlorosuccinimide and dimedone in a onepot catalyst-free reaction at an ambient temperature. On the other hand, the same reaction when conducted with two equivalents of N-chlorosuccinimide under similar reaction conditions, exclusive formation of 2-benzoyl-3-(dimethylamino)-6,6-dimethyl-6,7-dihydrobenzofuran-4(5H)-ones were observed. Simple and metal-free reaction conditions, selective product formation
Silver-Catalyzed Highly Regioselective Synthesis of<font>α</font>-Carbonyl Furans from Enynones
作者:Zheng-Wang Chen、Miao-Ting Luo、Dong-Nai Ye、Zhong-Gao Zhou、Min Ye、Liang-Xian Liu
DOI:10.1080/00397911.2013.878027
日期:2014.6.18
A general and efficient method for the synthesis of a wide range of alpha-carbonyl furans is described here. The cyclization of enynone is catalyzed by AgBF4 in a fluorous biphasic system of perfluorodecalin and N,N-dimethylformamide. A variety of chain ketone and cyclic ketone substrates were used to investigate the scope of the reactions.