Pheromone synthesis. Part 263: Synthesis of the racemate and the enantiomers of ( E )- cis -6,7-epoxy-2-nonenal, the male-produced pheromone of the red-necked longhorn beetle, Aromia bungii
作者:Kenji Mori
DOI:10.1016/j.tet.2018.01.052
日期:2018.3
The racemate and the enantiomers of (E)-cis-6,7-epoxy-2-nonenal, the male pheromone of Aromia bungii, were synthesized by olefin cross metathesis between crotonaldehyde and (±)-, (+)- and (−)-cis-3,4-epoxy-7-octene. The epoxide was prepared by the Grignard coupling between allylmagnesium bromide and (±)-, (+)- and (−)-cis-2,3-epoxypentyl triflate. (±)-cis-2,3-Epoxy-1-pentanol was prepared by MCPBA
外消旋物和(对映体ë) -顺式-6,7-环氧-2-壬烯醛,的阳信息素桃红天牛,通过烯烃交叉复分解的巴豆醛和之间合成(±) - ,(+) -和( - )-顺式-3,4-环氧-7-辛烯。通过烯丙基溴化镁与(±)-,(+)-和(-)-顺式-2,3-环氧戊基三氟甲磺酸酯之间的格利雅偶联制备环氧化物。通过(Z)-2-戊烯-1-醇的MCPBA环氧化制备(±)-顺式-2,3-环氧-1-戊醇,而其烯丙基醇的Sharpless不对称环氧化合成其对映异构体。