Stereospecific synthesis of conjugated (1E,3E)- and (1Z,3Z)-1,4-di(n-N,N-dimethylaminophenyl)-1,3-butadienes from 2-chloro-1-(n-N,N-dimethylaminophenyl)ethenes: fluorescence properties
作者:J. Gonzalo Rodriguez、J. Luis Tejedor、Angel Rumbero、Laureano Canoira
DOI:10.1016/j.tet.2006.01.030
日期:2006.3
3-butadienes (n=o-, m-, p-) were efficiently synthesised by homocoupling of the appropriate 2-chloro-1-(n-N,N-dimethylaminophenyl)ethene (n=o-, m-, p-) with stoichiometric amounts of zerovalent nickel complexes. The 1,3-butadienes were obtained as a mixture of stereoisomers, with independence of the starting E or Z chlorovinyl isomer. Moreover, the stereospecific (Z,Z) stereoisomer was obtained by partial hydrogenation
共轭1,4-二(ñ - Ñ,Ñ -dimethylaminophenyl)-1,3-丁二烯(Ñ = ø - ,米- ,p - )被有效通过合适的2-氯-1-(的自偶联合成Ñ - ñ,ñ -dimethylaminophenyl)乙烯(ñ = ø - ,米- ,p - )与化学计算量零价镍络合物。以立体异构体的混合物形式得到1,3-丁二烯,而与起始的E或Z氯乙烯基异构体无关。此外,立体声Z,Z)立体异构体是通过相应的1,3-丁二炔的部分加氢得到的,而立体有规(E,E)立体异构体是通过暴露在(Z,Z)或(Z,E)的阳光辐射下而得到的。在乙醇中的化合物。