40100-16-1Relevant academic research and scientific papers
Thermal reactions of regioisomeric 1,2,4-trithiolane s-oxides
Mloston, Grzegorz,Romanski, Jaroslaw,McKee, Michael L.,Reisenauer, Hans Peter,Schreiner, Peter R.
experimental part, p. 2132 - 2137 (2010/06/17)
The products of the gas-phase pyrolysis of two regioisomeric 1,2,4-trithiolane S-oxides were collected in an argon matrix at 1OK and studied by means of spectroscopic as well as computational methods. Whereas the main products of the pyrolysis of the symmetrical S-oxide were identified as thioformaldehyde S-oxide and thioformaldehyde S-sulfide, the non-symmetrical S-oxide gave predominantly dithioformic acid, which exists as a mixture of s-cis and s-trans conformers. We present a rationalization of the reaction pathways including density functional theory computations.
Flash vacuum pyrolysis of anthracenic Diels-Alder adducts, a convenient source of methanethial and methanethial S-oxide
Vallee, Yannick,Ripoll, Jean-Louis,Lafon, Christophe,Pfister-Guillouso, Genevieve
, p. 290 - 291 (2007/10/02)
The flash vacuum pyrolysis of Diels-Alder adducts of anthracene constitutes a rapid and selective route to methanethial 1 and methanithial S-oxide 2, as analyzed in the gas phase by photoelectron spectroscopy.Low temperature infrared and nuclear magnetic resonance (1H, 13C) spectra are also reported for sulfine 2.
Gas Phase Reactions, 24. The Thermal Generation of Thiocarbonyl Compounds
Bock, Hans,Hirabayashi, Takakuni,Mohmand, Shamsher
, p. 492 - 503 (2007/10/02)
Thiocarbonyl derivatives R1R2C=S with R1, R2 = H, CH3, C6H5 can be generated thermally in the gas phase from a variety of precursors.Especially advantageous are the cleavage of propene from allyl sulfides or, for their preparation in pure form, the pyrolysis of dithietane or trithiolane derivatives.Photoelectron spectroscopy proves to be well-suited for gas analysis in the flow tube used, for the optimization of the decomposition conditions, and via assignment of the observed ionization patterns for the characterization of the thioaldehydes and thioketones prepared.
Synthesis and Thermal Decomposition of 1,3-Dithietane and Its S-Oxides
Block, E.,Corey, E.R.,Penn, R.E.,Renken, T.L.,Sherwin, P.F.,et al.
, p. 3119 - 3130 (2007/10/02)
Syntheses of 1,3-dithietane (1), 1,3-dithietane 1-oxide (2), 1,3-dithietane 1,1-dioxide (3), cis-1,3-dithietane 1,3-dioxide (4), trans-1,3-dithietane 1,3-dioxide (5), and 1,3-dithietane 1,1,3-trioxide (6) are reported for the first time.These compounds are converted in high yield to the previously described sulfene dimer 1,3-dithietane 1,1,3,3-tetraoxide (7).The structures of 2 and 7 are found to be respectively puckered (by microwave spectroscopy) and planar (by X-ray crystallography).Spectroscopic and physical data are discussed (photoelectron (PE) and NMR spectros copy, pKa values, oxidation potentials) along with some data on base-catalyzed H/D exchange.The PE spectra are assigned using MO models on different levels, including PNO/CEPA for thioformaldehyde (CH2S).Thermal decomposition is investigated using three independent methods: mass, microwave, and PE spectroscopy.Two types of decomposition channels are observed: retro 2+2 and retro 3+1.Among others, species like thioformaldehyde and sulfine (CH2SO, thioformaldehyde S-oxide) are produced.They are characterized by their microwave structure as well as by their PE ionization patterns and IR spectra.
Photodissociation of Trimethylene Sulfoxide. Energy Partitioning and the Possible Formation of SO(1Δ)
Dorer, F. H.,Salomon, K. E.
, p. 3024 - 3028 (2007/10/02)
On direct photolysis or Hg(3P1) sensitized decomposition trimethylene sulfoxide (I) undergoes fragmentation in the gas phase to yield ethylene, propylene, and cyclopropane.There is a nonrandom distribution of the available energy in the cyclopropane-forming reaction which is interpreted to indicate that, in order to conserve spin angular momentum, this reaction channel may be driven to produce SO(1Δ) during direct photolysis, and SO(3Σ) during Hg(3P1) sensitized decomposition.There is a comparison of some aspects of the photochemistry of trimethylene sulfoxide to cyclobutanone photochemistry.
