isolongifolanone

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。