Selenocarbonyl Analogues of Tetrathiafulvaleno-quinone(-thioquinone)-1,3-dithiolemethides as New Donor Molecules

Abstract

Abstract Diethylthiotetrathiafulvalenoselenoquinone-1,3-dithiolemethide (1a) and -1,3-benzodithiolemethide (2a) were newly prepared as a donor molecule, which was colored blue in contrast to the corresponding thiocarbonyl- (1b and 2b) (green) and carbonyl-analogues (1c and 2c) (red). From comparison of their first redox potentials, 1a (2a) possesses almost the same electron-donating ability to 1b (2b) and 1c (2c). The reaction of 2a with P(n-Bu)3 afforded a coupled ylidene compound (3) albeit in low yield, which can be expected as another new donor molecule.