Synthesis of the end-capped 5-(N,N-dimethylamino)naphthyl-1-ethynyl derivatives and their 1,4-di[5-(N,N-dimethylamino)naphthyl]-1,3-butadiynes: anti rotamer structure
摘要:
A new family of the end-capped 5-(N,N-dimethylamino)naphthylethynyl chains were synthesized, as terminal acetylenes or poly(yne) structures, by heterocoupling between 5-iodo-N,N-dimethylnaphthalen-1-amine and 2-methyl-3-butyn-2-ol or 4-(5-iodo-1-naphthyl)-2-methyl-3-butyn-2-ol, catalyzed by the palladium-copper system. Catalytic homocoupling of the terminal acetylenes, affords to 1,4-dinaphthyl-1,3-butadiyne nanostructures. X-ray diffraction analysis of 1,4-di(alpha-naphthyl)-1,3-butadiyne shows that the naphthalene rings are in the anti configuration along the acetylene axis. All the conjugated compounds show an important fluorescent emission radiation. (c) 2005 Elsevier Ltd. All rights reserved.
Carbon dendron nano-chains with π-extended conjugation based on end-capped N,N-dimethylamino in linear 1,4-phenylethynyl or in 1,5-naphthylethynyl subunits: fluorescence analysis
作者:J. Gonzalo Rodríguez、J. Luis Tejedor
DOI:10.1016/j.tet.2004.12.054
日期:2005.2
Abstract The synthesis of dendrons with the end-capped 5-( N , N -dimethylamino)naphthyl-1-ethynyl unit connected to conjugated naphthylethynyl or p -phenylethynyl chains, as the branches of the 1,3,5-substitutedbenzenecore, have been undertaken by heterocoupling reaction between 1,3,5-triiodobenzene and the convenient end-capped 5-( N , N -dimethylamino)naphthylacetylene or 5-( N , N -dimethyla
摘要 以 5-( N , N - 二甲基氨基) 萘基-1-乙炔基单元连接到共轭萘乙炔基或对苯乙炔基链,作为 1,3,5-取代苯核心的支链,合成树枝状化合物,在钯-铜催化剂存在下,通过 1,3,5-三碘苯与方便的封端 5-(N,N-二甲氨基)萘乙炔或 5-(N,N-二甲氨基)萘乙炔基苯乙炔之间的杂偶联反应进行系统,产量高。已经分析了交替的萘乙炔基-苯乙炔基链对树突结构中荧光发射辐射的影响。