Results 251 to 260 of about 18,744 (300)
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An unusual synthesis of malonates
Tetrahedron Letters, 1990AbstractThe alkyl chloroacetates (I) react with CO in the presence of palladium diacetate (II) to form the dialkyl malonates (III).
Derek H. R. Barton +3 more
openaire +3 more sources
Angewandte Chemie, 2013
The Pd-catalyzed carbonylative α-arylation of monoethyl potassium malonates with aryl bromides and reactive aryl chlorides provides a simple and direct route to aryl β-ketoesters.
Signe Korsager +3 more
semanticscholar +1 more source
The Pd-catalyzed carbonylative α-arylation of monoethyl potassium malonates with aryl bromides and reactive aryl chlorides provides a simple and direct route to aryl β-ketoesters.
Signe Korsager +3 more
semanticscholar +1 more source
Chemistry, 2013
We demonstrated an asymmetric 1,3-dipolar cycloaddition of azomethine betaines with alkylidene malonates by using a chiral N,N'-dioxide-Ni(II) complex as a catalyst.
Jiangting Li +4 more
semanticscholar +1 more source
We demonstrated an asymmetric 1,3-dipolar cycloaddition of azomethine betaines with alkylidene malonates by using a chiral N,N'-dioxide-Ni(II) complex as a catalyst.
Jiangting Li +4 more
semanticscholar +1 more source
Chemistry, 2013
Flustering oxindoles: An enantioselective synthesis of 3,3'-disubstituted oxindoles by conjugate addition of malonates to isatylidene-3-acetaldehydes in high yield and enantioselectivity is developed (see scheme).
Ren-Rong Liu, Junliang Zhang
semanticscholar +1 more source
Flustering oxindoles: An enantioselective synthesis of 3,3'-disubstituted oxindoles by conjugate addition of malonates to isatylidene-3-acetaldehydes in high yield and enantioselectivity is developed (see scheme).
Ren-Rong Liu, Junliang Zhang
semanticscholar +1 more source
Journal of Organic Chemistry, 2013
A highly efficient Cu-catalyzed asymmetric Friedel-Crafts alkylation reaction of indoles with arylidene malonates using simple, stable, and easily prepared bis-sulfonamide diamine ligands was developed.
Jing Wu, Dongping Wang, Fan Wu, B. Wan
semanticscholar +1 more source
A highly efficient Cu-catalyzed asymmetric Friedel-Crafts alkylation reaction of indoles with arylidene malonates using simple, stable, and easily prepared bis-sulfonamide diamine ligands was developed.
Jing Wu, Dongping Wang, Fan Wu, B. Wan
semanticscholar +1 more source
Organic Letters, 2013
The AgOAc/ThioClickFerrophos complex effectively catalyzed the conjugate addition of glycine imino esters to arylidene and alkylidene malonates, furnishing the corresponding adducts in good yields with high enantioselectivities, in the presence or ...
T. Konno +4 more
semanticscholar +1 more source
The AgOAc/ThioClickFerrophos complex effectively catalyzed the conjugate addition of glycine imino esters to arylidene and alkylidene malonates, furnishing the corresponding adducts in good yields with high enantioselectivities, in the presence or ...
T. Konno +4 more
semanticscholar +1 more source
Journal of Organic Chemistry, 2014
Two new selective cascade processes for enynyl Fischer carbene complexes 1 are described in their reaction with alkynyl malonates. When carbene complexes 1 react with the sodium enolate of homopropargyl malonates 3 a consecutive Michael-type addition ...
A. Álvarez-Fernández +2 more
semanticscholar +1 more source
Two new selective cascade processes for enynyl Fischer carbene complexes 1 are described in their reaction with alkynyl malonates. When carbene complexes 1 react with the sodium enolate of homopropargyl malonates 3 a consecutive Michael-type addition ...
A. Álvarez-Fernández +2 more
semanticscholar +1 more source
Chemistry - An Asian Journal, 2013
Out of the pybox: We have developed a novel chiral calcium iodide catalyst from CaI2 and a pybox that is stable under moisture and oxygen. This catalyst was applied to catalytic asymmetric Mannich-type reactions of malonates with both N-Boc-protected ...
T. Tsubogo, Shota Shimizu, S. Kobayashi
semanticscholar +1 more source
Out of the pybox: We have developed a novel chiral calcium iodide catalyst from CaI2 and a pybox that is stable under moisture and oxygen. This catalyst was applied to catalytic asymmetric Mannich-type reactions of malonates with both N-Boc-protected ...
T. Tsubogo, Shota Shimizu, S. Kobayashi
semanticscholar +1 more source
, 2013
An efficient enantioselective Mannich reaction of imines bearing a heterocycle with malonates catalysed by a cinchona-based squaramide organocatalyst has been developed. This catalytic asymmetric reaction afforded the β-amino ester derivatives containing
Hailong He, D. Du
semanticscholar +1 more source
An efficient enantioselective Mannich reaction of imines bearing a heterocycle with malonates catalysed by a cinchona-based squaramide organocatalyst has been developed. This catalytic asymmetric reaction afforded the β-amino ester derivatives containing
Hailong He, D. Du
semanticscholar +1 more source