Add to ORKGHomochiral N-enoylimidazolidin-2-ones 5-8 are readily accessible, practical, and highly diastereoselective dienophiles in dialkylaluminium-promoted Diels-Alder reactions. Acrylate, methacrylate, and (E)-crotonate derivatives bearing ephedrine-based imidazolidin-2-one auxiliaries 1 and 2 undergo rapid, face-selective cycloadditions under mild conditions. High yields of diastereomerically homogeneous products 11-14 are readily obtained by crystallisation or chromatography. The reactivity scope of these systems is extended to less reactive dienes through auxiliary tuning by the application of alternative asparagine-based imidazolidin-2-one auxiliaries 3 and 4
An efficient and alternative synthesis of <i>exo</i>-imidazolidin-2-one dienes is described. A conde...
The development and synthesis of a novel class of C2-symmetric outer ring dienes is described. Six ...
Chiral auxiliaries and ligands form the basis of much of the modern developments in asymmetric synth...
Readily available and stable substituted [3]- dendralenes undergo highly chemo-, regio-, diastereo-...
Readily accessible alkyl 1-N-benzoyl-2-oxoimidazolidin-4-carboxylates display enhanced reactivity as...
HOFFMANN R, Mattay J. CYCLOADDITIONS .53. NEW SPIROCYCLIC CHIRAL DIENES - SYNTHESIS AND DIASTEREOSEL...
A new series of organocatalysts able to catalyse Diels-Alder cycloaddition reactions of \u3b1,\u3b2-...
Abstract. The first part of this paper deals with stereochemical studies related to the Diels-Alder ...
At the beginning of the reseach described in this thesis the catalytic asymmetric Diels-Alder reacti...
In this account, Diels-Alder reactions of different 1-amino-1,3-dienes with dienophiles are consider...
In this account, Diels-Alder reactions of different 1-amino-1,3-dienes with dienophiles are consider...
An efficient and alternative synthesis of <i>exo</i>-imidazolidin-2-one dienes is described. A conde...
In this account, Diels-Alder reactions of different 1-amino-1,3-dienes with dienophiles are consider...
α,β-Unsaturated acylammonium salts are useful dienophiles enabling highly enantioselective and stere...
Recently, important efforts have been devoted to asymmetric Diels–Alder (DA) cycloadditions. Several...
An efficient and alternative synthesis of <i>exo</i>-imidazolidin-2-one dienes is described. A conde...
The development and synthesis of a novel class of C2-symmetric outer ring dienes is described. Six ...
Chiral auxiliaries and ligands form the basis of much of the modern developments in asymmetric synth...
Readily available and stable substituted [3]- dendralenes undergo highly chemo-, regio-, diastereo-...
Readily accessible alkyl 1-N-benzoyl-2-oxoimidazolidin-4-carboxylates display enhanced reactivity as...
HOFFMANN R, Mattay J. CYCLOADDITIONS .53. NEW SPIROCYCLIC CHIRAL DIENES - SYNTHESIS AND DIASTEREOSEL...
A new series of organocatalysts able to catalyse Diels-Alder cycloaddition reactions of \u3b1,\u3b2-...
Abstract. The first part of this paper deals with stereochemical studies related to the Diels-Alder ...
At the beginning of the reseach described in this thesis the catalytic asymmetric Diels-Alder reacti...
In this account, Diels-Alder reactions of different 1-amino-1,3-dienes with dienophiles are consider...
In this account, Diels-Alder reactions of different 1-amino-1,3-dienes with dienophiles are consider...
An efficient and alternative synthesis of <i>exo</i>-imidazolidin-2-one dienes is described. A conde...
In this account, Diels-Alder reactions of different 1-amino-1,3-dienes with dienophiles are consider...
α,β-Unsaturated acylammonium salts are useful dienophiles enabling highly enantioselective and stere...
Recently, important efforts have been devoted to asymmetric Diels–Alder (DA) cycloadditions. Several...
An efficient and alternative synthesis of <i>exo</i>-imidazolidin-2-one dienes is described. A conde...
The development and synthesis of a novel class of C2-symmetric outer ring dienes is described. Six ...
Chiral auxiliaries and ligands form the basis of much of the modern developments in asymmetric synth...