发明名称 |
Processes for the preparation of macrocyclic ketones |
摘要 |
Disclosed are a process of subjecting a diester of a long-chain dicarboxylic acid having 18 to 21 carbon atoms to intramolecular condensation in the presence of titanium tetrachloride or zirconium tetrachloride and a trialkylamine to form an alpha-alkoxycarbonylated macrocyclic ketone, and a process for producing a macrocyclic ketone by hydrolyzing an alpha-alkoxycarbonylated macrocyclic ketone obtained by the process and then subjecting the hydrolyzate to decarboxylation. The invention provides a process for producing a macrocyclic ketone efficiently, which permits high concentration synthesis.
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申请公布号 |
US6861551(B2) |
申请公布日期 |
2005.03.01 |
申请号 |
US20020239078 |
申请日期 |
2002.09.19 |
申请人 |
JAPAN ENERGY CORPORATION |
发明人 |
TANABE YOO;MAKITA ATSUSHI |
分类号 |
B01J31/38;C07B61/00;C07C45/65;C07C45/67;C07C49/587;C07C67/313;C07C67/327;C07C69/757;(IPC1-7):C07C69/74 |
主分类号 |
B01J31/38 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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