The present invention relates to a process for the preparation of 5-fluorotryptophol as well as a process for the preparation of (1r,4r)-6'-fluoro-N,N-dimethyl-4-phenyl-4',9'-dihydro-3'H-spiro[cyclohexane-1,1 '- pyrano-[3,4b]-indol]-4-amine using the 5-fluorotryptophol obtained by said first process. The process according to the invention provides 5-fluorotryptophol in improved yield and purity without the need for chromatographic purification of the product.
本发明涉及一种制备5-
氟色
氨酚醇的方法,以及一种制备(1r,4r)-6'-
氟-N,N-二甲基-4-苯基-4',9'-二氢-3'H-螺[
环己烷-1,1'-
吡喃-[3,4b]-
吲哚]-4-胺的方法,该方法使用由该第一方法得到的5-
氟色
氨酚醇。本发明提供了一种改进产量和纯度的方法,无需对产物进行色谱纯化。