137040-84-7Relevant academic research and scientific papers
A Contribution to the Direct Observation of a Didehydroheteroaromatic with a Five-Membered Ring: 2,3-Didehydrothiophene
Teles, Joaquim Henrique,Hess, Andes B.,Schaad, Lawrence J.
, p. 423 - 432 (2007/10/02)
The flash vacuum pyrolysis and the photolysis of 2,3-thiophenedicarboxylic acid anhydride (6) were investigated by using the technique of matrix isolation combined with FT-IR spectroscopy.No conclusive proof for the existence of 2,3-didehydrothiophene (1) could be found, but two hitherto unknown isomers were isolated and characterized: vinylidenethioketene (10) and thioformylvinylidenecarbene (15). Key Words: Matrix isolation / Photolysis / Vibrational spectra, theoretical / 2,3-Didehydrothiophene / Calculations, ab initio, semi-empirical
