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.
Palladium-Catalyzed Formation of C=C Bonds: A Regioselective Strategy for the Synthesis of 2-Vinylfurans by 1,2-H Shift of Palladium-Carbene Complexes
作者:Haiying Zhan、Xiulian Lin、Yanying Qiu、Zuodong Du、Peixian Li、Yongjian Li、Hua Cao
DOI:10.1002/ejoc.201300016
日期:2013.4
A convenient method to synthesize vinylfurans through a palladium-catalyzed cyclization/1,2-H shift sequence under mild conditions is described. This is an efficient strategy to synthesize 2-vinylfurans from ene–yne ketones, and the corresponding products are obtained in good yields.
AgOTf/I<sub>2</sub>-Mediated Cyclization/Cross-Coupling/Isomerization of Enynones with Phosphorus Ylides: An Expedient Route to Stereoselective Synthesis of (<i>E</i>)-2-Alkenylfurans
作者:Ling Tang、Yangyi Zhang、Guisheng Deng
DOI:10.1021/acs.joc.1c01109
日期:2021.10.1
Ag(I)-catalyzed cascade reactions involving enynone cyclization and cross-coupling with phosphorus ylides have been achieved for the first time. Subsequent treatment of the reaction mixture with I2 afforded the corresponding (E)-α-alkenylfurans in 73–95% yields with excellent stereoselectively. A reasonable mechanism has been proposed.
首次实现了涉及烯炔酮环化和与磷叶立德交叉偶联的 Ag(I) 催化级联反应。随后用 I 2处理反应混合物,以 73-95% 的收率得到相应的 ( E )-α-烯基呋喃,并具有优异的立体选择性。提出了合理的机制。
Synthesis of 2-acylfurans from 3-(1-alkynyl)-2-alken-1-ones via the oxidation of gold–carbene intermediates by H2O2
作者:Tao Wang、Junliang Zhang
DOI:10.1039/c0dt00024h
日期:——
An efficient approach to 2,4,5-trisubstituted 2-acylfurans is described: treating 3-(1-alkynyl)-2-alken-1-ones with AuCl3 in DCM at rt in the presence of H2O2 afforded good yields of 2-acylfurans.
Preparation of 4-(Nitromethyl)furan Derivatives and Their Application in the Syntheses of Bis(furan-2-yl)oximes
作者:Yinbo Wan、Yang Zhu、Haiyun Peng、Guisheng Deng
DOI:10.1021/acs.joc.1c02359
日期:2022.1.7
An efficient method for the preparation of tetrasubstituted furans, which contains a nitromethyl group at the 4-position, has been developed. The applications of 4-(nitromethyl)furans on the synthesis of highly functionalized bis(furyl)oxime were explored for the first time.