Organic compounds -- part of the class 532-570 series – Organic compounds – Amino nitrogen containing
Patent
1979-09-28
1981-06-02
Doll, John
Organic compounds -- part of the class 532-570 series
Organic compounds
Amino nitrogen containing
260239BE, 26032685, 546246, 562553, 564487, 564502, C07C 8512, C07C 85147, C07C 85153, C07C 8520
Patent
active
042713188
ABSTRACT:
An .omega.-lactam having 4-12 carbon atoms, an oligomer thereof or a ring-opened polymer or an .omega.-amino carboxylic acid corresponding thereto, is heated in the presence of water and a metallic carbonate compound to obtain a metallic salt of .omega.-amino carboxylic acid. Barium, calcium and lithium are the preferred metals. The resulting metal salt is converted to an amino Schiff base which may be used as a starting material for preparing an .alpha.,.omega.-diamino alkane which may or may not include an amino group as a side chain. This further produces a metallic carbonate compound. The metallic carbonate is returned and used again as a reagent for forming the metal salt of the .omega.-amino carboxylic acid to create a closed system.
REFERENCES:
patent: 2327119 (1943-08-01), Martin
patent: 2870201 (1959-01-01), Pollack
patent: 3412156 (1968-11-01), Ueda et al.
patent: 3655748 (1972-04-01), Tandara
patent: 3663643 (1972-05-01), Hall
patent: 3974215 (1976-08-01), Goulay
Wagner & Zook, "Synthetic Organic Chemistry," p. 416 (1963).
Aizawa Hideyuki
Kimura Takeshi
Setsuda Tsutomu
Doll John
Toray Industries Inc.
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