35 research outputs found
Efficient Cu-Catalyzed Asymmetric Conjugate Additions of Alkylzinc Reagents to Aromatic and Aliphatic Acyclic Nitroalkenes
No full textPractical and Highly Enantioselective Synthesis of b-Alkynyl-b-amino Esters through Ag-Catalyzed Asymmetric Mannich Reactions of Silylketene Acetals and Alkynyl Imines
No full textAg-Catalyzed Diastereo- and Enantioselective Vinylogous Mannich Reactions of α-Ketoimine Esters. Development of a Method and Investigation of its Mechanism
No full textCu-Catalyzed Asymmetric Conjugate Additions of Alkylzinc Reagents to Acyclic Aliphatic Enones
No full textHighly Enantioselective Diels−Alder Reactions of Danishefsky Type Dienes with Electron-Deficient Alkenes Catalyzed by Yb(III)-BINAMIDE Complexes
No full textA concise enantioselective synthesis of pyrrolidine sedum alkaloids (R)-(R)-(+), (S)-(S)-(−)-pyrrolsedamine and (S)-(R)-(+)-pyrrolallosedamine by using proline catalysed α-amination reaction
No full textArtificial metalloenzymes for enantioselective catalysis based on biotin-avidin
No full textHomogeneous and enzymatic catalysis offer complementary means to generate enantiomerically pure compounds. Incorporation of achiral biotinylated rhodium−diphosphine complexes into (strept)avidin yields artificial metalloenzymes for the hydrogenation of N-protected dehydroamino acids. A chemogenetic optimization procedure allows one to produce (R)-acetamidoalanine with 96% enantioselectivity. These hybrid catalysts display features reminiscent both of enzymatic and of homogeneous systems
H5CoW12O40@nanosilica: a green, bifunctional, heterogeneous nanocatalyst for one-pot three-component Mannich reaction in water
No full textResolved Chiral 3,4-Diazaphospholanes and Their Application to Catalytic Asymmetric Allylic Alkylation
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