Title:
PROCESS FOR THE PREPARATION OF $g(a)-AMINOKETONE DERIVATIVES
Document Type and Number:
WIPO Patent Application WO/2000/055113
Kind Code:
A1
Abstract:
A process of reacting an N-protected $g(a)-amino acid ester with a dihalomethyllithium to thereby obtain an $g(a)-amino dihalomethyl ketone derivative. This process is suitable for industrial production and enables economical and efficient production of $g(a)-amino dihalomethyl ketone derivatives and $g(b)-amino-$g(a)-hydroxycarboxylic acid derivatives.
Inventors:
ONISHI TOMOYUKI (JP)
NAKANO TAKASHI (JP)
HIROSE NAOKO (JP)
TORII TAKAYOSHI (JP)
NAKAZAWA MASAKAZU (JP)
IZAWA KUNISUKE (JP)
NAKANO TAKASHI (JP)
HIROSE NAOKO (JP)
TORII TAKAYOSHI (JP)
NAKAZAWA MASAKAZU (JP)
IZAWA KUNISUKE (JP)
Application Number:
PCT/JP2000/001498
Publication Date:
September 21, 2000
Filing Date:
March 13, 2000
Export Citation:
Assignee:
AJINOMOTO KK (JP)
ONISHI TOMOYUKI (JP)
NAKANO TAKASHI (JP)
HIROSE NAOKO (JP)
TORII TAKAYOSHI (JP)
NAKAZAWA MASAKAZU (JP)
IZAWA KUNISUKE (JP)
ONISHI TOMOYUKI (JP)
NAKANO TAKASHI (JP)
HIROSE NAOKO (JP)
TORII TAKAYOSHI (JP)
NAKAZAWA MASAKAZU (JP)
IZAWA KUNISUKE (JP)
International Classes:
C07C221/00; C07C227/02; C07C249/02; C07C269/06; C07C225/06; C07C225/16; C07C229/34; C07C251/04; C07C251/24; C07C271/18; C07C271/22; (IPC1-7): C07C221/00; C07C225/16; C07C227/02; C07C229/34; C07C249/02; C07C251/04; C07C251/24; C07C269/06; C07C271/18; C07C271/22
Domestic Patent References:
| WO1998007687A1 | 1998-02-26 |
Other References:
JEAN VILLIERAS ET. AL.: "Formation and reactivity of . alpha., alpha - dibromoalkyllithium reagents.", BULL. SOC. CHIM. FR., no. 7-8, PT. 2, 1975, pages 1797 - 1802, XP002929111
CATHY BACQUET ET. AL.: "Synthesis of dihalomethyl ketones by the action of carbenoids on esters.", C. R. ACAD. SCI., SER. C., vol. 278, no. 13, 1974, pages 929 - 931, XP002929112
CATHY BACQUET ET. AL.: "Synthesis of dihalomethyl ketones by the action of carbenoids on esters.", C. R. ACAD. SCI., SER. C., vol. 278, no. 13, 1974, pages 929 - 931, XP002929112
Attorney, Agent or Firm:
Nakamura, Minoru (Shin-Tokyo Bldg 3-1 Marunouchi 3-chome Chiyoda-ku, Tokyo, JP)
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