Pierre Vogel, Rosario Scopelliti, Kurt Schenk, Marc-Etienne Schwenter
A one step procedure has been found that converts 2,2'-methylenedifuran (1) into 2,2,',2",2'''-(1,2-ethanediylidene)tetrafuran (4: 1,1,2,2-tetrakis(furan-2-yl)ethane). This compound adopts two similar C-2V-symmetrical conformations (4A and 4A') in the crys ...
2002