Improved Difluorination of Cyclohexenones using Morph-DAST by the Application of Ultra-High Pressure
作者:Julian Box、Laurence Harwood、Roger Whitehead
DOI:10.1055/s-1997-3224
日期:1997.5
2,6- and 6,6- difluorinated α-substituted cyclohexenes have been prepared by the action of morpholinosulfur trifluoride on the corresponding cyclohex-2-enones under thermal conditions. The overall efficiency of this process has been significantly improved by the application of ultra high pressure (10-19Kbar). Investigations into the scope of this methodology have resulted in the preparation of the novel fluorinated compounds: 6,6-difluorolimonene and 3,3-difluoro-4-cholestene.
已通过氟化吗啉硫三氟化物对相应的环己烯-2-酮在热条件下的作用,制备了2,6-和6,6-二氟取代的α-取代环己烯。通过应用超高压(10-19Kbar),该过程的整体效率得到了显著提升。对该方法的适用范围的研究结果得到了新型氟化化合物的制备:6,6-二氟柠檬烯和3,3-二氟-4-胆甾烯。