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Chiral Brønsted acid-catalyzed inverse electron-demand aza Diels-Alder reaction.
Inverse electron-demand aza Diels-Alder reaction of aldimine with enol ethers proceeded under the influence of a phosphoric acid diester, derived from (R)-BINOL, to give tetrahydroquinolineExpand
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Chiral Brønsted acid catalyzed enantioselective hydrophosphonylation of imines: asymmetric synthesis of alpha-amino phosphonates.
[reaction: see text] A cyclic phosphoric acid derivative, derived from (R)-BINOL, was used as a chiral Brønsted acid (10 mol %) in hydrophosphonylation of aldimines with diisopropyl phosphite at roomExpand
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Enantioselective Mannich-type reaction catalyzed by a chiral bronsted acid derived from TADDOL
A novel cyclic dialkyl phosphate was synthesized starting from (+)-diethyl tartrate. Its catalytic activity as a chiral Bronsted acid has been examined in the Mannich-type reaction of a ketene silylExpand
  • 96
Enantioselective Aza-Diels-Alder Reaction Catalyzed by a Chiral Brønsted Acid: Effect of the Additive on the Enantioselectivity
Danishefsky's diene and aldimine underwent aza Diels-Alder reaction under the influence of chiral phosphoric acid derived from (R)-BINOL as a chiral Bronsted acid to afford piperidinone derivativesExpand
  • 101
Chiral Brønsted acid-catalyzed hydrophosphonylation of imines―DFT study on the effect of substituents of phosphoric acid
The enantioselective hydrophosphonylation reaction of diisopropyl phosphite with aldimine furnished α-amino phosphonates with high enantioselectivities by means of a chiral phosphoric acid. DFTExpand
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