作者:Sumio Maruyama、Hirofumi Hokari、Tatsuo Wada、Hiroyuki Sasabe
DOI:10.1055/s-2001-17518
日期:——
The syntheses of novel cyclic oligomers based on the carbazolylacetylene unit are described. The desired cyclic tetramer could be synthesized in 14.3% yield by the reaction of 3,6-diethynyl-9-tetradecylcarbazole and 3,6-bis(3’-iodo-9’-tetradecylcarbazolyl)-9-tetradecylcarbazole in the presence of Pd(PPh3)4/CuI as catalysts under high dilution conditions and purified by column chromatography and isolated by preparative gel permeation chromatography. Besides the tetramer, a cyclic octamer was also isolated in 5.4% yield.
本文介绍了基于咔唑基乙炔单元的新型环状低聚物的合成。在高稀释条件下,3,6-二乙炔基-9-十四烷基咔唑和 3,6-双(3'-碘-9'-十四烷基咔唑基)-9-十四烷基咔唑在钯(PPh3)4/CuI 催化剂存在下发生反应,合成出所需的环状四聚体,收率为 14.3%。除四聚体外,还分离出一种环状八聚体,产率为 5.4%。