Halogen Bond‐Catalyzed Friedel−Crafts Reactions of Furans Using a 2,2’‐Bipyridine‐Based Catalyst
作者:Huimiao Zhang、Patrick H. Toy
DOI:10.1002/adsc.202001019
日期:2021.1.5
to catalyze Friedel−Crafts reactions of furans. Electrophiles used successfully in these reactions included various enones, an aldehyde, and a carboxylic acid anhydride. The yields of the reactions were generally good using a moderate catalyst loading (0.025 or 0.1 equiv.) at a relatively low temperature (room temp. or 50 °C) in acetonitrile. The catalyst used was designed with a biaryl scaffold so
Hydride reduction of alpha, beta-unsaturated carbonyl compounds using chiral organic catalysts
申请人:MacMillan David
公开号:US20080125310A1
公开(公告)日:2008-05-29
Nonmetallic, chiral organic catalysts are used to catalyze the 1,4-hydride reduction of an α,β-unsaturated carbonyl compound. The α,β-unsaturated carbonyl compound may be an aldehyde or cyclic ketone, and the hydride donor may be a dihydropyridine. The reaction is enantioselective, and proceeds with a variety of hydride donors, catalysts, and substrates. The invention also provides compositions effective in carrying out the 1,4-hydride addition of α,β-unsaturated carbonyl compounds.
Catalytic Conjugate Additions of Nitrogen-, Phosphorus-, and Carbon-Containing Nucleophiles by Amphoteric Vanadyl Triflate
作者:Yow-Dzer Lin、Jun-Qi Kao、Chien-Tien Chen
DOI:10.1021/ol702302y
日期:2007.12.1
A series of carbamates, amides, N-tosyl amides, (hetero)arenes, and hydrogen phosphines/phosphites has been examined as nucleophiles for (hetero)Michael-type additions to enones and enamides catalyzed by amphoteric vanadyl triflate under mild and neutral conditions. The newly developed C-N, C-P, and C-C bond-formation protocols were carried out smoothly in good to high yields without intervention of any 1,2-additions.
Dujardin, Gilles; Poirier, Jean-Marie, Bulletin de la Societe Chimique de France, 1994, vol. 131, p. 900 - 909
作者:Dujardin, Gilles、Poirier, Jean-Marie
DOI:——
日期:——
Bulbule, Vivek J.; Deshpande, Vishnu H.; Bedekar, Ashutosh V., Journal of Chemical Research - Part S, 2000, # 5, p. 220 - 221
作者:Bulbule, Vivek J.、Deshpande, Vishnu H.、Bedekar, Ashutosh V.