D-Limonene (20.00 g, 146.8 mmol) and zinc diethyldithiocarbamate (2.00 g, 5.53 mmol) were added to a 100 mL round bottom flask and heated to 140 ºC with stirring. Sulfur (20.00 g, 625.0 mmol) was added over 5 minutes to the reaction mixture. After the addition of sulfur, a heat gun was used to melt any sulfur adhering to the walls of the flask, returning the reagent to the reaction mixture. Over the course of 30 minutes, the reaction appeared to form one phase and changed from orange to dark brown. The reaction was continued for a period of 7 days. To isolate the product, the material was poured from the flask while hot, and then allowed to cool and solidify in a silicone mould. Yields were typically >95% based on mass balance of the starting materials and product.