Conformational polymorphism and thermorearrangement of 2,2′-bis-O-(N,N-dimethylthiocarbamato)-1,1′-binaphthalene. A facile synthesis of 1,1′-binaphthalene-2,2′-dithiol

The title compound was found to exhibit conformational polymorphism which greatly influenced the efficiency of the thermorearrangement to 2,2′-bis-S-(N,N-dimethylthiocarbamato)-1,1′-binaphthalene. Recognition of this phenomenon has allowed a reproducible synthesis of 1,1′-binaphthalene-2,2′ dithiol.