154500-50-2Relevant academic research and scientific papers
Thioacylthioketenes by Pyrolysis of 1,3-Dithiethanes and 1,2-Dithiole Derivatives
Kappe, C. Oliver,Pedersen, Carl Th.,Catel, Jean-Marie,Mollier, Yves
, p. 351 - 356 (2007/10/02)
Thioacylthioketenes are formed by flash vacuum pyrolysis (FVP) of 1,3-dithiethanes 6, 1,2-dithiole-3-thiones 11, 14, 15, 3-iodo-1,2-dithiolylium iodide 9, 3-methylthio-1,2-dithiolylium iodides 16, 17 and 1,2-dithiol-3-one tosylhydrazone sodium salt 10.They show IR absorption in the region 1754-1700 cm-1 due to the C=C=S grouping.It is proposed based on the results obtained that 1,2-dithiol-3-ylidenes (1,2-dithiole carbenes) rearrange to give thioacylthioketenes which further rearrange forming thiete-2-thiones.The latter finally fragment into carbon disulfide and alkynes.Formation of C3S2 has been observed in the pyrolysis of the dithiethanes and 1,2-dithiole-3-thione.
