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
Mechanistic Dichotomy in CpRu(CH<sub>3</sub>CN)<sub>3</sub>PF<sub>6</sub> Catalyzed Enyne Cycloisomerizations
作者:Barry M. Trost、F. Dean Toste
DOI:10.1021/ja012450c
日期:2002.5.1
Enynes are easily accessible building blocks as a result of the rich chemistry of alkynes and thus represent attractive substrates for ring formation. A ruthenium catalyst for cycloisomerization effects such reaction of 1,6- and 1,7-enynes typically at room temperature in acetone or DMF under neutral conditions. The reaction is effective for forming five- and six-membered rings of widely divergent