The Synthesis of Bicyclo[4.2.1]nona-2,4,7-trienes by [6π + 2π]-Cycloaddition of 1-Substituted 1,3,5-Cycloheptatrienes Catalyzed by Titanium and Cobalt Complexes
作者:Vladimir A. D’yakonov、Gulnara N. Kadikova、Ramil N. Nasretdinov、Lilya U. Dzhemileva、Usein M. Dzhemilev
DOI:10.1021/acs.joc.9b00996
日期:2019.7.19
The [6π + 2π]-cycloaddition of alkynes to 1-methyl-, propyl-, benzyl-, and hydroxymethyl-substituted 1,3,5-cycloheptatrienes in the presence of catalytic systems Ti(acac)2Cl2-Et2AlCl and Co(acac)2(dppe)/Zn/ZnI2 was performed for the first time to give practically valuable bicyclo[4.2.1]nona-2,4,7-trienes in high yields (72–88%). The structures of the obtained bicyclic compounds were reliably proved
在催化体系Ti(acac)2 Cl 2 -Et 2 AlCl的存在下,炔烃的[6π+2π]-环加成至1-甲基,丙基,苄基和羟甲基取代的1,3,5-环庚烯首次进行了Co(acac)2(dppe)/ Zn / ZnI 2的合成,从而以高收率(72–88%)得到了实用的双环[4.2.1] nona-2,4,7-三烯。通过NMR方法和X射线衍射分析可靠地证实了所获得的双环化合物的结构。研究了新合成的自行车对Jurkat,K562,U937和HL60肿瘤和正常细胞系的体外细胞毒活性以及诱导细胞凋亡。