Fluoroboron compound having aromatic ring or salt thereof, and method for producing compound having cyclic ether-fused aromatic ring using the same
申请人:Eisai R&D Management Co., Ltd.
公开号:US08273885B2
公开(公告)日:2012-09-25
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).
提供了一种高度安全稳定的氟硼化合物,能够通过分子内烷氧甲基化反应形成环状醚融合环,或其盐。该化合物可以在金属催化剂存在下,通过式(I)或其盐所代表的氟硼化合物的分子内烷氧甲基化反应合成。(其中,由式所代表的基团表示芳香环;L表示卤素原子等取代基;R表示具有1或2个碳原子的取代或未取代的烷基;M表示碱金属阳离子等,但须满足L和—R—OCH2BF3M分别位于芳香环上相邻的碳原子上,或者在融合芳香环的情况下,在相邻的两个碳原子上位于一个碳原子上)。