FLUOROBORON COMPOUND HAVING AROMATIC RING OR SALT THEREOF, AND PROCESS FOR PRODUCTION OF COMPOUND HAVING CYCLIC ETHER-FUSED AROMATIC RING BY USING THE SAME
申请人:Eisai R&D Management Co., Ltd.
公开号:EP2062901A1
公开(公告)日:2009-05-27
Provided is a fluoroboron compound which is highly safe and stable and is capable of forming a cyclic ether-fused ring by the intramolecular alkoxymethylation reaction, or a salt thereof. The compound can be synthesized by the intramolecular alkoxymethylation reaction of a fluoroboron compound represented by the formula (I) or a salt thereof in the presence of a metal catalyst.
(wherein the moiety represented by the formula
represents an aromatic ring; L represents a substituent such as a halogen atom; R represents a substituted or unsubstituted alkylene group having 1 or 2 carbon atoms; and M represents an alkali metal cation or the like, with the proviso that L and -R-OCH2BF3M are respectively located on contiguous carbon atoms on the aromatic ring, or in the case of a fused aromatic ring, on two carbon atoms adjacent to one carbon at the fused position).
本发明提供了一种通过分子内烷氧甲基化反应能够形成环醚融合环的高度安全稳定的氟硼化合物或其盐。该化合物可在金属催化剂存在下,通过式(I)代表的氟硼化合物或其盐的分子内烷氧甲基化反应合成。
(其中由式
代表芳香环;L 代表取代基,如卤素原子;R 代表具有 1 或 2 个碳原子的取代或未取代的亚 烷基;M 代表碱金属阳离子或类似物,但 L 和 -R-OCH2BF3M 分别位于芳香环上相邻的碳原子上,或在芳香环熔合的情况下,位于熔合位 置上相邻一个碳原子的两个碳原子上)。