作者:Ramazan Erenler、Jean-François Biellmann
DOI:10.1002/jccs.200700017
日期:2007.2
2-dienyl)pyridine 17 and the acetylenes 5, 12 and 16 wereobtainedbyreductionofthecorrespondingpropargylicacetates 3, 10and 15bySamarium(II)iodide in the presence of Pd(0). Base-promoted isomerisation of acetylene 12 provided allene 11 in a yield of 80%. 1-(Pentafluorophenyl)-3-phenylprop-2-yn-1-ol 2 was prepared from phenylacetylene and pentafluorobenzaldehyde. The condensation of nicotinaldehyde with trimethylsilylacetylene
二烯基)吡啶11和3-(3-(吡啶-3-基)丙-1,2-二烯基)吡啶17和乙炔5、12和16是在Pd( 0)。乙炔 12 的碱促进异构化以 80% 的产率提供了丙二烯 11。1-(五氟苯基)-3-苯基丙-2-yn-1-ol 2 由苯乙炔和五氟苯甲醛制备。烟醛与三甲基甲硅烷基乙炔缩合得到 3-(trimethylsilyl)-1-(pyridine-3-yl)prop-2-yn-1-ol 7。在碱性条件下将 7 的甲硅烷基去除为乙炔 8 . 乙炔 8 与碘苯的 Pd 催化缩合得到 3-苯基-1-(pyridine-3-yl)prop-2-yn-1-ol 9。 Pd 催化 8 与 3-溴吡啶缩合得到 1,3 -dipyridin-3-yl-prop-2-yn-1-ol 14.