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Facile synthesis of l-Dopa tert-butyl ester by catalytic enantioselective phase-transfer alkylation

✍ Scribed by Takashi Ooi; Minoru Kameda; Hidenori Tannai; Keiji Maruoka

Book ID: 104210994
Publisher: Elsevier Science
Year: 2000
Tongue: French
Weight: 94 KB
Volume: 41
Category: Article
ISSN: 0040-4039
DOI: 10.1016/s0040-4039(00)01443-x

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✦ Synopsis

Facile asymmetric synthesis of L-Dopa and related amino acid esters has been achieved by phase-transfer catalysis of the rationally designed C 2 -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.

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