Tetrahedron Letters p. 8339 - 8342 (2000)
Update date:2022-08-02
Topics:
Ooi
Kameda
Tannai
Maruoka
Facile asymmetric synthesis of L-Dopa and related amino acid esters has been achieved by phase-transfer catalysis of the rationally designed C2-symmetric chiral quaternary ammonium salts 1. The 'scale-up' experiment performed with 5.00 g of tert-butyl glycinate-benzophenone Schiff base (2) represents the practical aspect of our approach. (C) 2000 Elsevier Science Ltd.
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