140605-82-9Relevant academic research and scientific papers
Gold-catalyzed synthesis of 1,3-disubstituted benzenes through tandem allylation/cyclization reaction of alkynals
Bhunia, Sabyasachi,Abu Sohel, Shariar Md.,Yang, Chao-Chin,Lush, Shie-Fu,Shen, Fwu-Ming,Liu, Rai-Shung
, p. 566 - 570 (2009)
Treatment of alkynals with 2-substituted allylsilanes and PPh3AuCl/AgOTf (5/3 mol%) catalyst led to formation of 1,3-disubstituted benzenes efficiently. This reaction sequence comprises an initial allylation of aldehyde, followed by cycloisomerization of enynes; PPh3AuOTf is active in both steps.
Synthesis, Characterization, and Catalytic Activity of Chiral NHC Platinum(II) Pyridine Dihalide Complexes
Blanc, Aurélien,De Frémont, Pierre,Hatey, Delphine,Pale, Patrick,Pertschi, Romain
supporting information, (2020/03/16)
A series of platinum(II) dihalide pyridine complexes bearing chiral C2-symmetric N-heterocyclic carbene (NHC) ligands [Pt(NHC*)(Py)(Hal)2] was synthesized in a one-pot procedure and characterized by NMR spectroscopy and single crystal X-ray diffraction (SC-XRD). The complexes were tested for the asymmetric cycloisomerization of enynol into bicyclo[3.1.0]hexanone and feature an excellent catalytic activity at room temperature along with a modest enantiomeric induction (up to 39% ee).
De Novo Synthesis of Highly Functionalized Benzimidazolones and Benzoxazolones through an Electrochemical Dehydrogenative Cyclization Cascade
Xu, Fan,Long, Hao,Song, Jinshuai,Xu, Hai-Chao
supporting information, p. 9017 - 9021 (2019/06/13)
Benzimidazolone and benzoxazolone moieties are important scaffolds in a variety of pharmaceutical molecules. These bicyclic heterocycles are usually prepared from a benzene derivative through the construction of an additional five-membered heterocyclic ri
Radical Cyclization of (Bromomethyl)dimethylsilyl Propargyl Ethers. Regio-, Chemo-, and Stereoselectivity
Journet, Michel,Malacria, Max
, p. 3085 - 3093 (2007/10/02)
Radical cyclization of (bromomethyl)dimethylsilyl propargyl ether derivatives 1 is a powerful reaction with a high degree of regio-, chemo-, and stereoselectivity.Trisubstituted olefins 3, cyclopentene derivatives 5, and diquinane system 7j are obtained in good yields by a judicious choice of unsaturated substituents.Triquinane frameworks could be obtained stereoselectively from a suitable acyclic substrate of type 1 in a one-pot reaction.First attempts have not yet allowed us to aim at this goal due to interesting (1,5) hydrogen transfers.Moreover, we have intercepted, for the first time, the α-cyclopropyl radical which is involved in the Storck-Beckwith mechanism of the 5-versus 6-membered ring formation in the vinyl radical cyclization.
