One-Pot Three-Component Tandem Metathesis/Diels−Alder Reaction
作者:Hee-Yoon Lee、Hyoun Young Kim、Hyunsup Tae、Byung Gyu Kim、Jaeyoung Lee
DOI:10.1021/ol035194c
日期:2003.9.1
[reaction: see text] A tandem enyne, diene-ene metathesis reaction followed by Diels-Alderreaction accomplished a stereoselective three-componentreaction protocol with four stereocenters.
Atom Transfer Radical Addition to Alkynes and Enynes: A Versatile Gold/Photoredox Approach to Thio-Functionalized Vinylsulfones
作者:Haoyu Li、Zengrui Cheng、Chen-Ho Tung、Zhenghu Xu
DOI:10.1021/acscatal.8b02194
日期:2018.9.7
visible-light photoredoxcatalysis and gold catalysis has been developed, affording diverse trifluoromethylthio- and difluoromethylthio-functionalized vinylsulfones with high stereoselectivity in good yields. Thiosulfonylation reaction of enyne can also be realized for constructing functionalized carbo- and heterocyclesthrough a radical cascade cyclization process. These reactions proceed through a gold-assisted
Synthesis of Cyclopropyl-Substituted Furans by Brønsted Acid Promoted Cascade Reactions
作者:J. Stephen Clark、Filippo Romiti、Kirsten F. Hogg、Malai Haniti S. A. Hamid、Sven C. Richter、Alistair Boyer、Joanna C. Redman、Louis J. Farrugia
DOI:10.1002/anie.201500625
日期:2015.5.4
Chloroacetic acidpromotes an efficient and diastereoselective intramolecular cascadereaction of electron‐deficient ynenones to deliver products featuring a 2,3,5‐trisubstituted furan bearing a fused cyclopropyl substituent at the 5‐position. Synthetically relevant polycyclic building blocks featuring rings of various sizes and heteroatoms have been synthesized in high yield using this mild acid‐catalyzed