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1. (WO1982004043) PROCESS FOR PREPARING $g(b)-CHLOROALANINE
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1982/004043    International Application No.:    PCT/JP1982/000174
Publication Date: 25.11.1982 International Filing Date: 17.05.1982
IPC:
C07C 227/14 (2006.01)
Applicants: MITSUI TOATSU CHEMICALS, INCORPORATED [JP/JP]; 2-5, Kasumigaseki 3-chome, Chiyoda-ku, Tokyo 100 (JP) (For All Designated States Except US).
OHOKA, Masaharu [JP/JP]; (JP) (For US Only).
KATOH, Toshio [JP/JP]; (JP) (For US Only).
MITA, Ryuichi [JP/JP]; (JP) (For US Only).
KAWASHIMA, Nobuyuki [JP/JP]; (JP) (For US Only).
HIGUCHI, Chojiro [JP/JP]; (JP) (For US Only).
KAWASHIMA, Nobuhiro [JP/JP]; (JP) (For US Only).
YAMAGUCHI, Akihiro [JP/JP]; (JP) (For US Only).
NAGAI, Shousuke [JP/JP]; (JP) (For US Only).
TAKANO, Takao [JP/JP]; (JP) (For US Only)
Inventors: OHOKA, Masaharu; (JP).
KATOH, Toshio; (JP).
MITA, Ryuichi; (JP).
KAWASHIMA, Nobuyuki; (JP).
HIGUCHI, Chojiro; (JP).
KAWASHIMA, Nobuhiro; (JP).
YAMAGUCHI, Akihiro; (JP).
NAGAI, Shousuke; (JP).
TAKANO, Takao; (JP)
Agent: WAKABAYASHI, Tadashi; 8th Floor, 16th Kowa Bldg., 9-20 Akasaka 1-chome, Minato-ku, Tokyo 107 (JP)
Priority Data:
56/73521 18.05.1981 JP
56/103165 03.07.1981 JP
Title (EN) PROCESS FOR PREPARING $g(b)-CHLOROALANINE
(FR) PROCEDE DE PREPARATION DE $g(b)-CHLOROALANINE
Abstract: front page image
(EN)A process for preparing $g(b)-chloroalanine by reacting a salt of aziridine-2-carboxylic acid with 2.0 to 5.0 mol, per mol of said salt, of hydrogen chloride in an aqueous solution, and selectively crystallizing the resulting $g(b)-alanine from the reaction solution. The recovered solution from which the crystallized $g(b)-chloroalanine has been isolated and which contains both $g(b)-chloroalanine and by-produced $g(a)-chloro-$g(b)-alanine is treated with a base to convert them into a salt of aziridine-2-carboxylic acid. Thus, the solution can be recycled for use.
(FR)Procédé de préparation de $g(b)-chloroalamine en faisant réagir un sel d'acide aziridine-2-carboxylique avec 2,0 à 5,0 moles, par mole dudit sel, de chlorure d'hydrogène dans une solution aqueuse, et en cristallisant sélectivement la $g(b)-alanine résultante de la solution de réaction. La solution à partir de laquelle la $g(b)-chloroalanine cristallisée à été isolée et qui contient soit la $g(b)-chloroalanine soit la chloro-$g(b)-alanine en tant que sous-produit est traitée avec une base de manière à la convertir en un sel d'acide aziridine-2-carboxylique. La solution peut être recyclée à des fins d'utilisation.
Designated States: AU, US.
European Patent Office (CH, DE, FR, GB, NL).
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)