Sila‐α‐galbanone and Analogues: Synthesis and Olfactory Characterization of Silicon‐Containing Derivatives of the Galbanum Odorant α‐Galbanone
作者:Steffen Dörrich、Anna Ulmer、Christoph Mahler、Christian Burschka、Johannes A. Baus、Reinhold Tacke、An Chai、Changming Ding、Yue Zou、Gerhard Brunner、Andreas Goeke、Philip Kraft
DOI:10.1002/ejic.201402597
日期:2014.9
condensation or ring-closing alkene metathesis, were the key steps in these syntheses. The C/Si pairs 1a/1b, 2a/2b, and 3a/3b were studied for their olfactory properties. All compounds possess green-fruity galbanum-type odors with pineapple aspects and thus are olfactorily related. However, sila-analogues 1b–3b were found to be weaker than the corresponding parent carbon compounds 1a–3a. This effect is most pronounced
硅化合物 1b-3b 分别是白松香气味剂 α-galbanone (1a)、α-spirogalbanone (2a) 和 nor-α-galbanone (3a) 的 sila 类似物。Sila-α-galbanone (1b)、sila-α-spirogalbanone (2b) 和 sila-nor-α-galbanone (3b) 以异构纯形式在多步合成中合成,从 Me2SiCl2、(CH2=CH)2SiCl2 开始,和 Me2(CH2=CH)SiCl。乙烯基硅烷的加氢甲酰化,然后是闭环醛醇缩合或闭环烯烃复分解,是这些合成中的关键步骤。研究了 C/Si 对 1a/1b、2a/2b 和 3a/3b 的嗅觉特性。所有化合物都具有菠萝方面的绿色水果白松香型气味,因此在嗅觉上是相关的。然而,发现 sila 类似物 1b-3b 比相应的母体碳化合物 1a-3a 弱。这种效应对于 C/Si 对