News Update on Dimethyl Research: Aug – 2019

The Chemistry of Dimethyl Carbonate

Dimethyl carbonate (DMC) may be a versatile compound that represents a pretty eco-friendly various to each alkyl halides (or dimethyl sulfate) and gas for methylation and carbonylation processes, severally. In fact, the reactivity of DMC is tunable:  at T = ninety °C, methoxycarbonylations ensue, whereas at higher reaction temperatures, methylation reactions square measure ascertained with a spread of nucleophiles. within the explicit case of substrates at risk of multiple alkylations (e.g., CH2-active compounds and first amines), DMC permits unexampled property toward mono-C- and mono-N-methylation reactions. these days made by a clean method, DMC possesses properties of nontoxicity and biodegradability that makes it a real inexperienced chemical agent to use in syntheses that stop pollution at the supply. [1]

Dimethyl ether (DME) as an alternative fuel

With ever growing considerations on environmental pollution, energy security, and future oil provides, the worldwide community is seeking non-petroleum based mostly different fuels, along side a lot of advanced energy technologies (e.g., fuel cells) to extend the potency of energy use. the foremost promising different fuel are the fuel that has the best impact on society. the main impact areas embrace well-to-wheel greenhouse emission emissions, non-petroleum feed stocks, well-to-wheel efficiencies, fuel skillfulness, infrastructure, availableness, economics, and safety. Compared to a number of the opposite leading different fuel candidates (i.e., methane, methanol, ethanol, and Fischer–Tropsch fuels), dimethyl ether seems to own the biggest potential impact on society, and may be thought-about because the fuel of selection for eliminating the dependency on fossil fuel. [2]

Dimethyl Sulfide Production in Marine Phytoplankton

Significant dimethyl compound (DMS) production is confined to many categories of marine plant life, in the main the Dinophyceae (dinoflagellates) and also the Prymnesiophyceae (which includes the coccolitnophores). 100 and twenty-three individual clones of plant life representing twelve protoctist categories were examined in exponential growth for intra- and animate thing DMS (and its precursor DMSP). there’s a powerful correlation between the classification position of the plant life and also the production of DMS. though the Dinophyceae and Prymnesiophyceae predominate, alternative chromophyte alga (those possessing chlorophylls a and c) additionally contain and unleash vital amounts of DMS, as well as some members of the Heterokontae and also the Diatomophyceae (the diatoms). [3]

Acaricidal target and mite indicator as color alteration using 3,7-dimethyl-2,6-octadienal and its derivatives derived from Melissa officinalis leaves

Toxicities and color deformation were evaluated of essential oils of garden balm cultivated in France, Ireland, and geographic region and their constituents, beside the management effectivity of spray formulations (0.25, 0.5, and 1%) containing M. officinalis oils cultivated in France and its main compound against Dermatophagoides farinae and D. pteronyssinus adults. during a contact + fumigant bioassay, M. officinalis oil (France) was a lot of active against D. farinae and D. [4]

Synthesis and Charaterization of Metal Chelates of (5-(2,3-dimethyl-1-phenyl-3-pyrazolin-5-one-4-ylazo)-1H-pyrimidine-2,4-dione)

An dye UAAP and Mn(II), Co(II), Ni(II), Cu(II) and Zn(II)complexes were synthesized and characterised victimization elemental analysis, mass spectra, UV- Vis, light spectra, ESR spectrum, IR spectra, NMR spectra, NLO property, molar electrical phenomenon and magnetic measurements. The spectral and analytical knowledge reveal that UAAP act as each rough and tridentate substance. The molar electrical phenomenon knowledge reveal that complexes Co(II), Cu(II) and Zn(II) are nonelectrlytic and Mn(II), Ni(II) 1:2 solution in nature. supported all knowledge structures were planned for UAAp and complexes. [5]

Reference

[1] Tundo, P. and Selva, M., 2002. The chemistry of dimethyl carbonate. Accounts of chemical research, 35(9), pp.706-716. (Web Link)

[2] Semelsberger, T.A., Borup, R.L. and Greene, H.L., 2006. Dimethyl ether (DME) as an alternative fuel. Journal of Power Sources, 156(2), pp.497-511. (Web Link)

[3] Keller, M.D., Bellows, W.K. and Guillard, R.R., 1989. Dimethyl sulfide production in marine phytoplankton. (Web Link)

[4] Acaricidal target and mite indicator as color alteration using 3,7-dimethyl-2,6-octadienal and its derivatives derived from Melissa officinalis leaves
Jun-Hwan Park & Hoi-Seon Lee
Scientific Reportsvolume 8, Article number: 8129 (2018) (Web Link)

[5] G. Vidya, V. (2018) “Synthesis and Charaterization of Metal Chelates of (5-(2,3-dimethyl-1-phenyl-3-pyrazolin-5-one-4-ylazo)-1H-pyrimidine-2,4-dione)”, International Research Journal of Pure and Applied Chemistry, 16(1), pp. 1-15. doi: 10.9734/IRJPAC/2018/37899. (Web Link)

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