Practical Synthesis of 1-(7-Chlorobenzothiazol-2-yl)-1-methylethylamine, a Key Synthetic Intermediate for the Production of New Oxazine Herbicide, MI-3069
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- IKEGUCHI Masahiko
- Chemistry Group, Central Research Institute, Ishihara Sangyo Kaisha, Ltd.
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- SAWAKI Masahiko
- Chemistry Group, Central Research Institute, Ishihara Sangyo Kaisha, Ltd.
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- MAEDA Kazuyuki
- Biology Group, Central Research Institute, Ishihara Sangyo Kaisha, Ltd.
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- KIKUGAWA Hiroshi
- Biology Group, Central Research Institute, Ishihara Sangyo Kaisha, Ltd.
Bibliographic Information
- Other Title
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- 新規オキサジン除草剤MI-3069の製造における重要中間体である1-(7-クロロベンゾチアゾール-2-イル)-1-メチルエチルアミンの実用的合成
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Abstract
Practical synthetic routes for the preparation of 1-(7-chlorobenzothiazol-2-yl)-1-methylethylamine (VII), a key intermediate of the barnyardgrass-controlling herbicide, 3-[[1-(7-chlorobenzothiazol-2-yl)-1-methyl]ethyl]-2, 3-dihydro-6-methyl-5-phenyl-4H-1, 3-oxazin-4-one (MI-3069), were investigated. As the result, the intermediate VII was prepared in an excellent overall yield by cyclization of 2-amino-2-methylpropionitrile with 2-amino-6-chlorothiophenol, which was synthesized by hydrogenation of 2-nitro-6-chlorothiophenol derived from 2, 3-dichloronitrobenzene. This practical route consisted of shorter steps with relatively cheaper reactants than the reported method.
Journal
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- Journal of Pesticide Science
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Journal of Pesticide Science 26 (1), 21-27, 2001
Pesticide Science Society of Japan
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Details 詳細情報について
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- CRID
- 1390282680187429248
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- NII Article ID
- 110001713217
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- NII Book ID
- AN00196227
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- ISSN
- 03851559
- 13490923
- 1348589X
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- NDL BIB ID
- 5677741
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- Data Source
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- JaLC
- IRDB
- NDL
- Crossref
- NDL-Digital
- CiNii Articles
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- Abstract License Flag
- Disallowed