A facile approach to highly functional trisubstituted furans via intramolecular Wittig reactions
作者:Ko-Wei Chen、Siang-en Syu、Yeong-Jiunn Jang、Wenwei Lin
DOI:10.1039/c0ob00912a
日期:——
An efficient and mild synthesis of trisubstituted furans, starting from α,β-unsaturated ketones, tributylphosphine, and acyl chlorides, is described. The strategy employs the intramolecular Wittig protocol as a key step to install the crucial furan ring, leading to a wide variety of highly functional furans in one step.
Selenium Dioxide‐Promoted Regioselective Synthesis of Multi‐Substituted Furans from Terminal Alkynes and Aldehydes
作者:Yafeng Liu、Fengkai Sun、Zhenyu An、Man Miao、Xin Guo、Chonglong Li
DOI:10.1002/adsc.202300964
日期:2024.1.9
A SeO2-mediated regioselective synthesis of multi-substituted furans has been achieved through intermolecular cyclization of terminalalkynes with aldehydes. The developed methodology used commercially available starting materials and afforded various 2,3,5-triarylfurans.
Oxidative Cross-Coupling of Allenyl Ketones and Organoboronic Acids: Expeditious Synthesis of Highly Substituted Furans
作者:Ying Xia、Yamu Xia、Rui Ge、Zhen Liu、Qing Xiao、Yan Zhang、Jianbo Wang
DOI:10.1002/anie.201400500
日期:2014.4.7
Allenylketones are employed as coupling partners in palladium‐catalyzed oxidative cross‐coupling reactions with organoboronicacids. This reaction constitutes an efficient methodology for the synthesis of highlysubstitutedfuran derivatives. Palladium‐carbene migratory insertion is proposed as the key step in this transformation.