发明授权
- 专利标题: Cyano-dicarboxylate
- 专利标题(中): 氰基二羧酸酯
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申请号: US531095申请日: 1983-09-12
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公开(公告)号: US4521344A公开(公告)日: 1985-06-04
- 发明人: Jacob S. Tou , Alfred A. Schleppnik
- 申请人: Jacob S. Tou , Alfred A. Schleppnik
- 申请人地址: MO St. Louis
- 专利权人: Monsanto Company
- 当前专利权人: Monsanto Company
- 当前专利权人地址: MO St. Louis
- 主分类号: C07C51/56
- IPC分类号: C07C51/56 ; C07C57/34 ; C07D307/60
摘要:
A phenylethyl substituted dimer of ethylene and maleic anhydride, named 7-phenyloctane-(1,2),(5,6)-dianhydride, is chemically synthesized by(a) alkylating alkyl 2,4-dihalobutyrate with alkyl 2-cyano-3-phenylbutyrate,(b) alkylating the resulting halide condensation product with a carboxylate selected from the group consisting of trialkyl ethane-1,1,2-tricarboxylate and dimethyl cyanoethane-1,2-dicarboxylate,(c) acid hydrolyzing the resulting tetra or pentaester accompanied by decarboxylating, and(d) dehydrating the resulting tetra-acid to yield the desired phenylethyl substituted dimer of ethylene and maleic anhydride,wherein the alkyls in the butyrate and carboxylate ester groups each contain from one to about four carbon atoms and halo is selected from the group consisting of bromo, chloro and iodo.
公开/授权文献
- US5649171A On-line video editing system 公开/授权日:1997-07-15
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