Synthesis and properties of 1,6-methano[10]annuleno[3,4-c]thiophene and its 1,3-dicyano derivative
作者:Shigeyasu Kuroda、Mitsunori Oda、Mizuho Nagai、Yuko Wada、Ryuta Miyatake、Tatsuki Fukuda、Hiroaki Takamatsu、Nguyen Chung Thanh、Masaru Mouri、Yanmei Zhang、Mayumi Kyogoku
DOI:10.1016/j.tetlet.2005.08.145
日期:2005.10
New thiophene-annulated 1,6-methano[10]annulene 1 and 2 were synthesized. The anisotropic deshielding effect from the π-electron system, based on the chemical shift values of the bridged methylene protons, is reduced compared with that of 3, and their crystal structures show clear bond alternation.
合成了新的噻吩环化的1,6-甲基[10]环戊烯1和2。与3相比,基于桥连亚甲基质子的化学位移值,来自π电子体系的各向异性去屏蔽作用降低,并且其晶体结构显示出清晰的键交替。