The isolongifolanone was synthesized from the longifolene using a one-step method with a yield close to that of two-step method.
以长叶烯为原料,一步合成异长叶烷酮,产率接近分步合成法。
A new process for preparing isolongifolene isomerized directly from heavy turpentine oil was studied.
探讨了以重质松节油为原料进行直接异构化制备异长叶烯的新工艺,选出了较为理想的GOn4-/TiO2(A)固体超强酸催化剂,确定了较好的反应条件为:催化剂用量为原料质量的1%~2%、异构化反应温度190~200℃,反应时间4h,异长叶烯得率达到90%以上,为工业化生产异长叶烯探索了一条"绿色"新工艺途径。
From analyses of GC and GC-MS, the main product is isolongifolene from isomerization.
研究了SO42-/TiO2-ZrO2型固体超强酸催化剂的制备及其催化长叶烯的异构反应,通过GC、GC-MS和标样分析,确定其主产物为异长叶烯。
Through the study on the preparation of isolongifolene with longifolene by isolate, a new method was found for the isolation using a multiple catalyst.
通过对长叶烯异构化制备异长叶烯方法的研究,找到了利用复合催化剂进行异构化反应的新方
The study of the flower morphology of Knoxia ualercanoides Thorel et Pitard indicated the flowers had the appearance of heterostyle.
本文研究红芽大戟花的形态,发现存在花柱异长现象。
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