Karl‐Otto Westphalen

Asymmetric Syntheses via Heterocyclic Intermediates; VIII¹. Enantioselective Synthesis of (<i>R</i>)-α-Methyl-α-amino Acids using L-Valine as Chiral Auxiliary Reagent

Ulrich Schöllkopf, Ulrich Groth, Karl‐Otto Westphalen · Synthesis · 1981 · 76 citations · Full text

Asymmetric Syntheses, Engineering, Biochemistry +13

Asymmetric syntheses via heterocyclic intermediates, XL. Studies on the acylation of lithiated bislactim ethers of cyclo(‐<scp>L</scp>‐Val‐Ala‐) and cyclo(‐<scp>L</scp>‐Val‐Gly‐) Asymmetric synthesis of (<i>R</i>)‐α‐alkenyl and (<i>R</i>)‐α‐ethinyl alanine methyl esters by the bislactim ether method

Ulrich Schöllkopf, Karl‐Otto Westphalen, Jürgen Schröder et al. · Liebigs Annalen der Chemie · 1988 · 47 citations

Asymmetric Syntheses, Lithiated Bislactim, Bioorganic Chemistry +13

Synthesis and Herbicidal Activity of Phenylpyridines – A New Lead

Peter Schäfer, Gerhard Hamprecht, Puhl Michael et al. · CHIMIA International Journal for Chemistry · 2003 · 38 citations · Full text

Diversity Oriented Synthesis, Derivative (Chemistry), Bioorganic Chemistry +14

New fluoro intermediates for herbicidal sulfonylureas

Gerhard Hamprecht, Horst Mayer, Karl‐Otto Westphalen et al. · Pesticide Science · 1999 · 18 citations

Halogenation, Bioorganic Chemistry, Bioassay-guided Isolation +12