An Efficient Modular Synthesis of Conjugated ω-(<b><i>p-</i></b>Hexyloxyphenyl)-polyenals
作者:Kazimiera Wilk、Beata Domagalska、Ludwik Syper
DOI:10.1055/s-2001-18711
日期:——
Convenient precursors (α,β-unsaturated aldehydes 1-5) for all-E conjugated Ï-(p-hexyloxyphenyl)polyenals having two (15), four (16), five, (19), six (17) and eight (18) conjugated double bonds were synthesized in a modular synthesis using reactive silyl enol ethers [1-(trimethylsilyloxy)-1,3-butadiene or 1-(trimethylsilyloxy)-1,3,5-hexatriene)] as building blocks, and 5,5-diethoxypenta-2-enal (1) as a template. Polyene 8 containing three conjugated double bonds in its structure was obtained from Ï-(p-hexyloxyphenyl)propenal (6) and butadienyl ethyl ether as starting materials.
使用反应性硅烷基烯醇醚[1-(三甲基硅氧基)-1,3-丁烷]模块化合成了具有两个(15)、四个(16)、五个(19)以活性硅基烯醇醚[1-(三甲基硅氧基)-1,3-丁二烯或 1-(三甲基硅氧基)-1,3,5-己三烯]为构件,以 5,5-二乙氧基五-2-烯醛 (1) 为模板,通过模块化合成法合成了具有两个 (15)、四个 (16)、五个 (19)、六个 (17) 和八个 (18) 共轭双键的全 E 共轭Ï-(对己氧基苯基)多烯醛。以 Ï-(p-hexyloxyphenyl)propenal (6) 和丁二烯乙醚为起始原料,制得了结构中含有三个共轭双键的聚烯 8。