发明名称 |
VERFAHREN ZUR HERSTELLUNG VON (DIOXOLENON-4- YL)METHYLESTER-DERIVATE |
摘要 |
There is provided a method by which various compounds (1) having a carboxyl group in the molecule have the carboxyl group converted to a (dioxolenon-4-yl)methyl ester at low cost, in a simple way and at high yield. <??>The process for producing compounds of formula (3) according to the reaction scheme shown below comprises reacting carboxylic acids of formula (1) with 4-chloromethyldioxolenone compounds of formula (2) in a solvent in the presence of both a phase transfer catalyst and a metal iodide: <CHEM> Äwhere Q represents an organic group, M represents a hydrogen atom, an alkali metal, an alkaline earth metal or a transition metal, R1 and R2 represent a hydrogen atom, an optionally substituted (C1-6 alkyl group or phenyl group)Ü. |
申请公布号 |
AT520679(T) |
申请公布日期 |
2011.09.15 |
申请号 |
AT20020707247T |
申请日期 |
2002.03.29 |
申请人 |
NIPPON SODA CO., LTD. |
发明人 |
WATAI, TOSHIYUKI;TAKASE, MITSURU;SAGAE, TAKAHIRO;MORI, SHIGEO;KAWAHARA, NORIAKI |
分类号 |
C07D317/40;C07D499/00;C07D499/88;C07D499/897 |
主分类号 |
C07D317/40 |
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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