cycloaddition reactionsThe article offers information on an experiment conducted on l-proline-catalyzed 1,3-dipolar cycloaddition of some schiff bases to methyl 4-[1-Oxo-2-(2-oxo-2,3-dihydro- 1H-indol-3-ylidene)ethyl]phenylcarbamate. It mentions the whole procedure along with the chemicals ...
Venkatanarayana M, Dubey PK (2012) Synth Comm 42:1746Venkatanarayana M, Dubey PK (2012) l -Proline-catalyzed Knoevenagel condensation: a facile, green synthesis of (e)-ethyl-2-cyano-3-(1H-indol-3-yl)acrylates and (e)-3-(1H-indol-3-yl)acrylonitriles. Synth Commun 42:1746–1759...
With this communication we extend the methodology of proline-catalyzed direct asymmetric aldol reactions to include α-unsubstituted aldehydes as acceptors. This important aldehyde class gives the corresponding aldols in 22−77% yield and up to 95% ee when the reactions are performed in pure aceto...
BUI T,BARBAS C F.A proline-catalyzed asymmetric Robinson annulation reaction[J].Tetrahedron Lett,2000,41:6 951-6 954.Bui, T,Barbas, C. F.Aproline-catalyzed asymmetric Robinson annulation reaction. Tetrahedron Letters . 2000Bui T, Barbas C F III. A proline-catalyzed asymmetric Robinson ...
Proline-Catalyzed Direct Asymmetric Aldol Reactions; Catalytic Asymmetric Synthesis of anti-1,2-Diols Most enzymatic transformations have a synthetic counterpart. Often though, the mechanisms by which natural and synthetic catalysts operate differ markedly... S Bahmanyar,KN Houk - 《Chemtracts》 被引...
L-Proline as catalyst facilitates the formation of the carbanion derived from an active methylene compound, while simultaneously delivering protons to the N-confused porphyrin.doi:10.1002/chin.201345105Liu, BinLi, XiaofangZhang, JieChmielewski, Piotr J....
- bestatin via l-proline-catalyzed 2-amination of an aldehyde. Tetrahedron Letters. 2008, 49, 6791-6793.George, S.; Suryavanshi, G.S.; Sudalai, A. A short enantioselective synthesis of (-)-bestatin via L- proline-catalyzed α-amination of an aldehyde. Tetrahedron Lett. 2008, 49, ...
The cooperative palladium/l-proline-catalyzed direct α-allylic alkylation of ketones with alkynes is achieved. This reaction exhibits high atom economy since a leaving group is not liberated and a stoichiometric amount of extra oxidant is not needed. A broad range of functional groups are tolerated...
Selected non-enantioselective proline-catalyzed reactions have also been included. However, the present review does not cover the use of important proline-derived auxiliaries or catalysts including the Enders-hydrazones or the Corey–Bakshi–Shibata-catalyst, which have been reviewed elsewhere.1., 2....
Direct enanti-oselective aldol reactions catalyzed by calix[4]arene-based L-proline derivatives in the water[J]. Tetra-hedron,2014,70( 30) : 4471 - 4477.Serkan Eymur;Ezgi Akceylan;Ozlem Sahin;et al.Direct enantioselective aldol reactions catalyzed by calix[4]arenebased L-proline derivatives...