Results 61 to 70 of about 1,110,495 (128)

Organocatalytic Michael addition–lactonisation of carboxylic acids using α,β-unsaturated trichloromethyl ketones as α,β-unsaturated ester equivalents [PDF]

, 2014
The authors thank the Royal Society for a University Research Fellowship (ADS), The Carnegie Trust for the Universities of Scotland (LCM), Syngenta/EPSRC (Case award to DGS), GSK/EPSRC (CASE award to SRS), the EU (IEF for CS), and the European Research ...
Morrill, L.C., D'Hollander, A.C.A., O'Riordan, Timothy J. C., O'Riordan, T.J.C., Taylor, James E., Shapland, Peter, Smith, S.R., Morrill, Louis, Shapland, P., Stark, Daniel G., Smith, Siobhan R., Simal Fernandez, Carmen, D'Hollander, Agathe C. A., Stark, D.G., Smith, A.D., Taylor, J.E., Squires, James A., Squires, J.A., Smith, Andrew D., Simal, Carmen, Smith, A.D.; id_orcid   +20 more
core   +1 more source

Indium(III)‐Catalyzed Hydration and Hydroalkoxylation of α,β‐Unsaturated Ketones in Aqueous Media

, 2018
The hydration of α,β-unsaturated ketones with water proceeded efficiently in the presence of In(OTf)3 (20 mol%) in aqueous media to afford synthetically versatile β-hydroxyketones in moderate to good yields with good functional group compatibility.
Chu, Xue-Qiang, Shi, Wen-Xiao, Loh, Teck-Peng, Man‐Ling Zhi, Wen‐Xiao Shi, Xue‐Qiang Chu, Yun, Jin-Jin, Zhi, Man-Ling, Teck‐Peng Loh, Jin‐Jin Yun, Zhi‐Liang Shen, Shen, Zhi-Liang   +11 more
core   +1 more source

Iron-Catalyzed Chemoselective Reduction of α,β-Unsaturated Ketones

, 2018
International audienceAn iron‐catalyzed chemo‐ and diastereoselective reduction of α,β‐unsaturated ketones into the corresponding saturated ketones in mild reaction conditions is reported herein.
Lator, Alexis, Alexis Lator, Poater, Albert, Renaud, Jean-Luc, Jean-Luc Renaud, Albert Poater, Gaillard, Sylvain, Sylvain Gaillard   +7 more
core   +1 more source

Highly Enantioselective Transfer Hydrogenation of α,β-Unsaturated Ketones

, 2006
We describe an efficient and highly enantioselective conjugate transfer hydrogenation of α,β-unsaturated ketones that is catalyzed by a salt made from tert-butyl valinate and a recently introduced powerful chiral phosphoric acid catalyst (TRIP)
Martin, N., List, B.
core   +1 more source

Highly Enantioselective Transfer Hydrogenation of α,β-Unsaturated Ketones

, 2016
We describe an efficient and highly enantioselective conjugate transfer hydrogenation of α,β-unsaturated ketones that is catalyzed by a salt made from tert-butyl valinate and a recently introduced powerful chiral phosphoric acid catalyst (TRIP)
Benjamin List (1505173), Nolwenn J. A. Martin (2413330)   +1 more
core   +1 more source

Catalytic Asymmetric Hydroperoxidation of α,β-Unsaturated Ketones: An Approach to Enantiopure Peroxyhemiketals, Epoxides, and Aldols

, 2008
Efficient, selective: The primary amine salt 1 derived from quinine efficiently catalyzes the highly enantioselective hydroperoxidation of α,β‐unsaturated ketones furnishing stable and isolable cyclic peroxyhemiketals in enantiopure form. The versatility
List, B., Reisinger, C., Wang, X.
core   +1 more source

Synthesis of β-Haloketones by β-Addition Reactions of α,β-Unsaturated Ketones with BX3 (X=Br, Cl) as Halide Source

, 2014
A series of β-bromoketones and β-chloroketones were synthesized by the addition reactions of α,β-unsaturated ketones under BX3 (X = Br, Cl) and ethylene glycol reaction system.
Lee, Adam Shih-Yuan; Wang, Shu-Huei; Chang, Yu-Ting
core   +1 more source

Synthesis of β-Amino and β-Methoxy Ketones by Lewis Acids Promoted β-Substitution Reactions of β,γ-Unsaturated Ketones

, 2009
A reaction mixture of β,γ-unsaturated ketone and BF3·OEt2 in CH3OH was stirred at room temperature and β-methoxy ketone was produced in high yield. The β-amino ketone was obtained as the major product from a reaction mixture of β,γ-unsaturated ketone ...
Lee, Adam Shih-yuan; Wang, Shu-huei; Chang, Yu-ting; Chu, Shu-fang
core  

Synthesis of Substituted Quinolines Using the Dianion Addition of N-Boc-anilines and α-Tolylsulfonyl-α,β-unsaturated Ketones

, 2016
A short and versatile synthesis of substituted quinolines is provided. Alkylation of sodium tolylsulfinate with bromomethyl- or chloromethyl ketones generates β-keto sulfones.
Henry Q. Zhang (2493607), Thomas J. Sowin (2479018), Rolf E. Swenson (1409509)   +2 more
core   +1 more source

Palladium-Catalyzed Oxidative Rearrangement of Diaryl Alkenyl Carbinols to β,β-Diaryl α,β-Unsaturated Ketones

, 2016
An unusual oxidative palladium-catalyzed rearrangement of diaryl alkenyl carbinols to β,β-diaryl α,β-unsaturated ketones is described. The geometry of the alkene product is not determined by the electronic nature of the aryl substitutents but rather is ...
Arturo Orellana (1470739), David Rosa (2112652)   +1 more
core   +1 more source