Catalytic [6π + 2π]-Cycloaddition of 1,2-Dienes to Bis(cyclohepta-1,3,5-trien-7-yl)alkanes in the Presence of Ti(acac)2Cl2,–Et2AlCl
作者:V. A. D’yakonov、G. N. Kadikova、L. M. Khalilov、U. M. Dzhemilev
DOI:10.1134/s1070428018060027
日期:2018.6
An efficient procedure has been developed for the synthesis of difficultly accessible 9,9′-(alkane-α,ω-diyl)bis[7-(diphenylmethylidene)bicyclo[4.2.1]nona-2,4-dienes] and 16,16′-(alkane-α,ω-diyl)bis(tricyclo-[9.4.1.02,10]hexa-2,12,14-trienes) in 55–84% yields by [6π + 2π]-cycloaddition of 7,7′-(alkane-α,ω-diyl)bis-(cyclohepta-1,3,5-trienes) to 1,1-diphenylpropa-1,2-diene and cyclonona-1,2-diene in the
已经开发出一种有效的方法来合成难以接近的9,9'-(烷烃-α,ω-二基)双[7-(二苯基亚甲基)双环[4.2.1] nona-2,4-二烯]和16 16' - (链烷α,ω二基)二(三环[9.4.1.0 2,10 ]六2,12,14-三烯)在55-84%的收率由[6 π + 2 π ] -环的7,7'-(烷烃-α,ω-二基)双-(环庚-1,3,5-三烯)合成1,1-二苯基丙基-1,2-二烯和cyclonona-1,2-二烯催化体系Ti(acac)2 Cl 2 -Et 2 AlCl的存在。分离的化合物的结构已通过现代光谱方法可靠地证明。