Polyfluoro-compounds based on the cycloheptane ring system. Part 8. Pentafluorotropolone and other hydroxy- and methoxypolyfluorotropones
作者:Malcolm E. Allen、Robert Stephens、John Colin Tatlow
DOI:10.1016/s0022-1139(00)81206-3
日期:1984.7
Hexafluorotropone with aqueous sodium hydroxide afforded 2-, 3-, and 4-hydroxypentafluorotropone in the respective proportions, 15:65:20. The tropolone was isolated pure by chelation, and the 3-hydroxide by salt formation, but the 4- isomer was only obtained in admixture with the 3-hydroxide. Each product gave the corresponding methyl tropyl ether on treatment with diazomethane. Treatment of hexafluorotropone
六氟托酮与氢氧化钠水溶液分别以15:65:20的比例提供2-,3-和4-羟基五氟托酮。通过螯合分离纯的托酚酮,通过成盐分离3-羟基,但是仅与3-羟基混合获得4-异构体。每种产物在用重氮甲烷处理后得到相应的甲基对甲基醚。在温和的条件下用甲醇钠处理六氟托酮,得到一种混合物,但主要形成了3-甲醇或3,6-二甲醇:彻底的甲氧基化反应得到了六甲氧基托酮。与其他亲核试剂的反应未得到易处理的产物。