29135-40-8Relevant academic research and scientific papers
Stereospecific synthesis of S-(?)-trans-verbenol and its antipode by inversion of sterically hindered alcohols
Fang, Jia-Xing,Kong, Xiang-Bo,Liu, Fu,Zhang, Su-Fang,Zhang, Zhen
, (2020)
S-(?)-trans-Verbenol (1) and its antipode, R-(+)-trans-verbenol (1′) have been confirmed as the critical pheromone components of bark beetles. Synthesis of these two active secondary alcohols (1 and 1′) from commercially available starting materials S-α-pinene and R-α-pinene was reported. The key steps were mainly depended on the effective SN2 stereo-inversion of the hydroxy group of sterically hindered alcohols (3 and 3′), using Mitsunobu reaction or hydrolysis of mesylate ester, alternatively. Our results provide a new and stereo-selectivity way to obtain optically active insect pheromones.
Green and simple preparation method for synthesizing (-)-trans-verbenol and enantiomer (+)-trans-verbenol thereof
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Paragraph 0027; 0028; 0029, (2019/09/13)
The invention provides a green and simple preparation method for synthesizing (-)-trans-verbenol and enantiomer (+)-trans-verbenol thereof. The method is characterized by comprising the following steps: using (-)-cis-verbenol and (+)-cis-verbenol, utilizing a Mitsunobu reaction, and performing hydroxyl configuration inversion so as torespectively obtain the (-)-trans-verbenol and (+)-trans-verbenol, wherein the yield of the (-)-trans-verbenol is 81%, and the yield of the (+)-trans-verbenol is 80%. The synthetic method in the invention comprises novel, effective and environment-friendly steps and procedures. Compared with the conventional trans-verbenol synthesis method, the method disclosed by the invention avoids use of lead tetraacetate (an oxidizing agent) and benzene toxic solvents. The raw trans-verbenol can be prepared by alpha-pinene oxidation, and the (-)-trans-verbenol and (+)-trans-verbenol can be used for controlling bark beetles in China.
