| Original document(12 pages) 中文版 |
The invention relates to a 2- sulfur chromene acetoacetic ester (1) with a molecular formula. Therefore, a R+ (1) presents a linear or branching type alkyl with less than four carbon atoms, a R+ (2) means a linear or branching type alkyl with less than four carbon atoms and can be discretionally replaced by an acetoxy with a halogen or less than seven carbon atoms. A schiff base with the molecular formula (2) can be provided; wherein, R+[3] means a linear or branching type alkyl with less than six carbon atoms. The invention is prepared by reacting with an acetoacetic ester with a molecular formula, (omission) wherein, the R+ [1] and the R+ [2] have the same meaning. The reaction may as well be implemented in a situation where an organic inert diluent and an acylating agent exist together. |
Application Number
申请号 |
86103229 |
Application Date
申请日 |
1986.05.09 |
| Title 名称 |
Process for the preparation of 2-thiochromenylideneacetoacetic esters |
Publication Number
公开号 |
1005057 |
Publication Date
公开日 |
1986.11.19 |
| Approval Pub. Date |
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Granted Pub. Date |
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| International Classification 分类号 |
C07D335/06 |
Applicant(s) Name
申请人 |
Bayer AG. (DE) 5090 Leverkusen Bayerwerk, Federal Republic of Germany |
| Address 地址 |
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| Inventor(s) Name 发明人 |
Gerhard Franckowiak;Siegfried Goldmann |
| Attorney & Agent 代理人 |
LUO HONG |
| More information 更 多 信 息 |
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