Fig. 2: bis(4-thioanisole)bullvalene isomerism and isomerisation.
From: Controlling piezoresistance in single molecules through the isomerisation of bullvalenes
a Synthetic conditions and observed isomers in solution: 4 bromothioanisole 2.2 eq., Pd2(dba)3 20 mol%, [HP(t-Bu)3]BF4 80 mol%, NaOH, THF/H2O. 65 °C, 85% yield. b Possibly distinguishable constitutional isomers A − L, highlighting also 3 sets of enantiomeric pairs (B, B′), (D, D′), and (E, E′). c Network isomer diagram showing the possible Cope rearrangements.
