Synthesis of (<i>E</i>)-3-(1<i>H</i>-Pyrrol-3-yl)prop-2-ene Derivatives Using Organophosphorous Reagents
作者:Jürgen Liebscher、George Varvounis、Nikolaos Karousis
DOI:10.1055/s-2006-926426
日期:2006.5
The synthesis of (E)-3-[1-(toluene-4-sulfonyl)-1H-pyrrol-3-yl]prop-2-ene derivatives from 1-(toluene-4-sulfonyl)-1H-pyrrole-3-carbaldehyde by the Horner-Wadsworth-Emmons (HWE) reaction, is described. However, the HWE reaction with diethyl methoxymethylphosphonate and diethyl (2-methoxyethoxy)methylphosphonate gave a different product, namely, diethyl 1-methoxy(or methoxyethoxy)-2-[1-(toluene-4-sulfonyl)-1H-pyrrol-3-yl]vinyl}phosphonates, respectively. (E)-3-[1-(Toluene-4-sulfonyl)-1H-pyrrol-3-yl]prop-2-enes were easily hydrolysed to (E)-3-(1H-pyrrol-3-yl)prop-2-enes, two of which are natural products.
描述了通过Horner-Wadsworth-Emmons(HWE)反应从1-(toluen-4-sulfonyl)-1H-pyrrole-3-carbaldehyde合成(E)-3-[1-(toluen-4-sulfonyl)-1H-pyrrol-3-yl]prop-2-ene衍生物。然而,使用二乙基亚甲基甲氧基磷酸盐和二乙基(2-甲氧基乙氧基)甲基磷酸盐进行HWE反应却得到了不同的产物,即二乙基1-甲氧基(或甲氧基乙氧基)-2-[1-(toluen-4-sulfonyl)-1H-pyrrol-3-yl]乙烯}磷酸盐。(E)-3-[1-(toluen-4-sulfonyl)-1H-pyrrol-3-yl]prop-2-ene可以很容易地水解为(E)-3-(1H-pyrrol-3-yl)prop-2-ene,其中两个是天然产物。