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Synlett 2000; 2000(10): 1500-1502
DOI: 10.1055/s-2000-7652
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Dramatic Rate Enhancement by Ultrasonic Irradiation in Liquid-Liquid Phase-Transfer Catalytic Reactions

Takashi Ooi* , Eiji Tayama, Kanae Doda, Mifune Takeuchi, Keiji Maruoka
  • *Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo, Kyoto 606-8502 Japan; Fax + 81-75-753-4000; E-mail: maruoka@kuchem.kyoto-u.ac.jp
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Publication Date:
31 December 2000 (online)

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Significant rate enhancement was observed in the liquid-liquid phase-transfer catalytic epoxidations and alkylations under ultrasonic irradiation. Its advantage was also demonstrated in the asymmetric alkylation of tert-butyl glycinate-benzophenone Schiff base using C 2 -symmetric chiral phase-transfer catalyst.

alkylation - asymmetric synthesis - epoxidation - phase-transfer catalysis - ultrasonic wave

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