Title of article :
Synthesis and properties of 1,6-methano[10]annuleno[3,4-c]thiophene and its 1,3-dicyano derivative
Author/Authors :
Kuroda، نويسنده , , Shigeyasu and Oda، نويسنده , , Mitsunori and Nagai، نويسنده , , Mizuho and Wada، نويسنده , , Yuko and Miyatake، نويسنده , , Ryuta and Fukuda، نويسنده , , Tatsuki and Takamatsu، نويسنده , , Hiroaki and Thanh، نويسنده , , Nguyen Chung and Mouri، نويسنده , , Masaru and Zhang، نويسنده , , Yanmei and Kyogoku، نويسنده , , Mayumi، نويسنده ,
Abstract :
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.
Keywords :
o-Quinodimethane , X-ray crystallographic analysis , Thiophene , 1 , ring current
