One-Pot Synthesis of 1,2-Dihydropyridines: Expanding the Diverse Reactivity of Propargyl Vinyl Ethers
作者:Tobias Harschneck、Stefan F. Kirsch
DOI:10.1021/jo102545m
日期:2011.4.1
The catalyzed synthesis of 1,2-dihydropyridines starting from easily accessible propargyl vinyl ethers was realized. The reaction sequence involving a transition metal-catalyzed propargyl-Claisen rearrangement, a condensation step, and a Brønsted acid-catalyzed heterocyclization furnishes the highly substituted heterocycles in moderate to excellent yields. Additionally, a practical one-pot protocol
PtI2-Catalyzed tandem 3,3-rearrangement/Nazarov reaction of arylpropargylic esters: synthesis of indanone derivatives
作者:Huaiji Zheng、Xingang Xie、Juan Yang、Changgui Zhao、Peng Jing、Bowen Fang、Xuegong She
DOI:10.1039/c1ob06138k
日期:——
An efficient PtI2-catalyzed tandem reaction of arylpropargylic esters, involving 3,3-rearrangement and Nazarov reaction, has been developed to produce 3-substituted and 3,3-disubstituted indanonederivatives. This approach provided a pathway to the synthesis of indanone skeletons in natural products.
Palladium-catalyzed one-pot synthesis of polysubstituted furans from alkynoates and 2-yn-1-ols
作者:Huawen Huang、Huanfeng Jiang、Hua Cao、Jinwu Zhao、Dabin Shi
DOI:10.1016/j.tet.2011.12.033
日期:2012.4
Easily accessible propargyl vinyl ethers are found to be acyclic precursors to construct furan derivatives. According to the reactive behavior of the substrates and the regulation of reaction conditions, three synthetic routes to polysubstituted furans via palladium-catalyzed reactions of propargyl vinyl ethers in situ-prepared from alkynoates and 2-yn-1-ols are presented herein. These methods could have potential application in synthetic and pharmaceutical chemistry for its facilitation and accessible starting materials. (C) 2011 Elsevier Ltd. All rights reserved.