17222-37-6Relevant articles and documents
AN INFRARED SPECTROSCOPIC STUDY OF THE FORMALDEHYDE COMPLEXES OF DIMETHYL ETHER AND METHANOL IN SOLID NITROGEN
Nelander, B.
, p. 125 - 134 (1980)
Ir spectra of the formaldehyde complexes of methanol and dimethyl ether in solid nitrogen at 20 K are reported.Dimethyl ether forms a non hydrogen bonded complex, analogous to a previously studied dimethyl sulfide-formaldehyde complex.Methanol forms a hydrogen bonded complex with formaldehyde and in addition appears to form another complex probably with a structure similar to that of the dimethyl ether-formaldehyde complex.
Reactions and products revealed by NMR spectra of deuterated dimethylsulfoxide with iodomethane in neutral and basic media
Avella-Moreno,Nu?ez-Dallos,Garzón-Tovar,Duarte-Ruiz
, p. 535 - 543 (2015/10/19)
Reactions occurring within each one of two mixtures, a mixture of deuterated dimethylsulfoxide, DMSO-d6, with CH3I (system I) and another mixture of DMSO-d6 with CH3I, NaOH and water (system II), were monitored by 1D and 2D nuclear magnetic resonance (1H, 13C, heteronuclear multiple quantum correlation, heteronuclear multiple bond correlation and diffusion-ordered NMR spectroscopy). The analysis of the spectra as a function of reaction time revealed the formation of methoxy-bis(trideuteromethyl)sulfonium iodide, 3; the precipitation of hexadeuterated trimethyloxosulfonium, 2a; a methyl exchange between DMSO-d6 and 2a to produce trideuterated dimethylsulfoxide, DMSO-d3, 4, and nona-deuterated trimethyloxosulfonium iodide, 2b; and the production of small quantities of methanol, 5, trideuterated dimethylsulfide, 6, and dimethyl ether, 7, in both systems. Only system II precipitated deuterated [Na4(DMSO-dx)15][(I3)3I], 1a, a green solid with metallic shine that corresponds to an isotopomer of 1, which is produced by the self-assembly of DMSO and CH3I in the presence of NaOH and water.
Experimental evidence from H/D exchange studies for the failure of direct C-C coupling mechanisms in the methanol-to-olefin process catalyzed by HSAPO-34
Marcus, David M.,McLachlan, Kelly A.,Wildman, Mark A.,Ehresmann, Justin O.,Kletnieks, Philip W.,Haw, James F.
, p. 3133 - 3136 (2007/10/03)
(Chemical Equation Presented) Pool view preferred: In agreement with recent theoretical work, a new line of experimental evidence was obtained in support of the controversial claim that direct mechanisms do not couple methanol to ethylene in the catalyzed methanol-to-olefin process. The results preclude carbene routes and oxonium ylide mechanisms, among others (see picture), in favor of the hydrocarbon pool mechanism.