All articles of this category The development of amino acid esters as chiral auxiliary groups for the asymmetric construction of N-heterocycles by means of aza Diels-Alder reactions, Mannich reactions, Pictet-Spengler reactions and 1,3-dipolar cycloadditions is described. Also their application in the steric steering of carbo Diels-Alder reactions, radicalic transformations and enantioselective nucleophilic additions to carbonyl groups is highlighted. Amino acid esters - nitrogen heterocycles - heterocycles - asymmetric synthesis - chiral auxiliary groups
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Herbert Waldmann (1995) studied this question.