Novel calamitic N-methylimidazolium and pyridinium salts with modified citronellyl side-chains and various counterions 3–14 have been synthesised by utilising the commercially available (R)-citronellol (15) as the starting material. Differential scanning calorimetry (DSC), polarising optical microscopy (POM) and temperature-dependent X-ray diffraction studies revealed smectic A (SmA) mesophases for
Stereocontrolled synthesis of all of the four possible stereoisomers of -3,7-dimethyl- pentadec-2-yl acetate and propionate, the sex pheromone of the pine sawflies
作者:Kenji Mori、Shigeharu Tamada、Masanao Matsui
DOI:10.1016/s0040-4039(01)91431-5
日期:——
Stereocontrolled synthesis of all of the four possible stereoisomers of erythro-3,7-dimethyl-pentadec-2-yl acetate and propionate, the sex pheromone of the pine sawflies
作者:K. Mori、S. Tamada
DOI:10.1016/0040-4020(79)80054-x
日期:1979.1
All of the four possible stereoisomers of 2,3-erythro-3,7-dimethylpentadecan-2-ol 1 were synthesized by a stereospecific SN2 oxirane cleavage of (2S,3S)-2,3-epoxybutane or its antipode with lithium di[(R)- or (S)-4-methyldodecyl]cuprate. Their acetates or propionates were prepared to test their pheromone activity.
通过(2 S,3 S)-2,3-环氧丁烷或其对映体的立体特异性S N 2环氧乙烷裂解,合成了2,3-赤--3,7-二甲基十五烷基-2-醇1的所有四种可能的立体异构体。用二[(R)-或(S)-4-甲基十二烷基]铜酸锂。准备它们的乙酸盐或丙酸酯以测试其信息素活性。