作者:Philip Kraft、Walter Eichenberger
DOI:10.1002/ejoc.200300578
日期:2004.1
4′′-trimethylpent-2′′-enyloxy)propyl cyclopropanecarboxylate [(2′′E)-19], which has a powerful and sweet musk odor and slightly fruity nuances, was found to be a typical representative of this new class of musk odorants, was subjected to conformational analysis. In addition, we report the synthesis and olfactory properties of the related ketones 28−30, the 2-methyl-2-(1′,4′,4′-trimethylpent-2′-enyloxy)propyl
为了寻找新的脂肪族麝香,我们合成了 2-[1'-(3'',3''-二甲基环己-1''-烯基)乙氧基]-2-甲基丙醇 (8) 的丙酸酯,2-[1' -(5'',5''-二甲基环己-1''-烯基)乙氧基]-2-甲基丙醇(11),羟基乙酸1-(3',3'-二甲基环己-1'-烯基)乙酯( 12),以及以 1-(3',3'-二甲基环己-1'-烯基)乙酮 (5) 为原料的羟基乙酸 1-(5',5'-二甲基环己-1'-烯基)乙酯 (13)和 1-乙炔基-3,3-二甲基环己醇 (9)。我们发现 3,3-二甲基环己烯基衍生物 8(气味阈值 0.2 ng/空气)和 12(气味阈值 0.6 ng/空气)是优良的麝香气味剂,因此,我们构建了 1,2,4-trimethylpent-2-烯氧基类似物作为 seco 版本。酯 17-26 的合成开始于异丁醛 (14) 的 Wittig-Horner-Emmons 反应,然后皂化,甲基锂烷基化、LAH