558-19-0Relevant academic research and scientific papers
Complete 13C NMR Spectra of the Axial Forms of Methyl- Ethyl- and Isopropylcyclohexane
Squillacote, Michael E.,Neth, Joann M.
, p. 53 - 56 (2007/10/02)
Low temperature 13C NMR spectral data have been obtained for equatorial and axial methyl- ethyl- and isopropylcyclohexane using a high-temperature cryogenic trapping technique. 13C chemical shift differences between major and minor conformations of each compound are discussed in terms of chemical shift theories.A convenient synthesys of deuteriated dichlorofluoro- and difluorochloromethane, which are excellent low-temperature NMR solvent, is also presented. - KEY WORDS Low temperature 13C NMR; methylcyclohexane; ethylcyclohexane; isopropylcyclohexane; axial and equatorial conformers.
Tris(substituted amino) sulfonium salts
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, (2008/06/13)
Trisaminosulfonium salts of the formula (R1 R2 N)(R3 R4 N)(R5 R6 N)S+ X- wherein the R groups are alkyl of 1-20 carbons and each alkyl has at least 2 alpha hydrogens and X is selected from the group (CH3)3 SiF2, Cl, Br, I, CN, NCO, NCS NO2 and N3, are soluble in organic liquids. They are useful as polymerization catalysts and as reagents to replace other atoms or groups in organic compounds with F, Cl, Br, I, CN, NCO, NCS, NO2 or N3.
