Synfacts 2007(2): 0160-0160  
DOI: 10.1055/s-2006-955815
Synthesis of Materials and Unnatural Products
© Georg Thieme Verlag Stuttgart · New York

Carbon Sulfide Flowers

Contributor(s): Timothy M. Swager, Eric L. Dane
K. Yu. Chernichenko, V. V. Sumerin, R. V. Shpanchenko, E. S. Balenkova, V. G. Nenajdenko*
Moscow State University, Russian Federation
Further Information

Publication History

Publication Date:
23 January 2007 (online)

Significance

Circulene 3 was synthesized in two steps with an overall yield of 80%. In the first step, an excess of LDA and sulfur leads to replacement of all of 1’s protons with sulfur atoms. After extraction into water and acidification, intermediate 2 is isolated and then subjected to vacuum pyrolysis. Compound 3 sublimes in the temperature range of 450-535 °C, indicating its high thermal stability. Because its empirical formula is an octamer of C2S, 3 can be considered a new form of carbon sulfide. The authors have named it ”sulflower" because it resembles a sunflower.