Chemical and Kinetic Study on Stabilities of 3-Morpholinosydnonimine and Its N-Ethoxycarbonyl Derivative
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- ASAHI YUTAKA
- Chemical Research Laboratories, Research and Development Division, Takeda Chemical Industries, Ltd.
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- SHINOZAKI KAZUO
- Chemical Research Laboratories, Research and Development Division, Takeda Chemical Industries, Ltd.
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- NAGAOKA MICHIYO
- Chemical Research Laboratories, Research and Development Division, Takeda Chemical Industries, Ltd.
Abstract
Stabilities of 3-morpholinosydnonimine (II), hydrochloride (I) and N-ethoxycarbonyl-3-morpholinosydnonimine (VIII) were examined by photometry, potentiometry, thin-layer chromatography and spectroscopy. In alkaline solution VIII goes to ethanol, carbon dioxide and II, which successively decomposes to N-morpholino-N-nitrosoaminoacetic acid (V) and N-cyanomethylenaminomorpholine (VI) via N-morpholino-N-nitrosoaminoacetonitrile (III). In the processes of I=II=III, the initial equilibrium is very rapid and the consecutive cleavage is a spontaneous first order reaction at pH 3-7 or a base catalyzed reaction at pH 8-10. The initial process of is a base catalyzed. first order hydrolysis of N-ethoxycarbonyl group. Hydrolyses of I and VII in hydrochloric acid form morpholine, nitrogen, chloroacetic acid and ammonium chloride. Photolyses of I and VII in acid solution at γ<320mμt give glycolic acid beside the products mentioned above. Formation of I from III and hydrolysis of VI to N-aminomorpholine are acid catalyzed pseudo-first-order reactions. Decomposition of III to VI seems to be a radical reaction.
Journal
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- Chemical and Pharmaceutical Bulletin
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Chemical and Pharmaceutical Bulletin 19 (6), 1079-1088, 1971
The Pharmaceutical Society of Japan
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Details 詳細情報について
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- CRID
- 1390282679150622976
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- NII Article ID
- 130003766836
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- ISSN
- 13475223
- 00092363
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- Text Lang
- en
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- Data Source
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- JaLC
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed