9 results about "Methyl group" patented technology

The invention discloses a novel disulfonate type alkyl imidazole ionic liquid as well as a preparation method and application thereof. Structure of the ionic liquid is shown as formula (I), and the preparation method of the ionic liquid comprises the followings steps: trimethylsilylimidazole with structure shown as formula (II) is dropwise added to sultones with the structure shown as formula (III) for heat insulation reaction at the temperature of minus 20 DEG C to 30 DEG C, then water is dropwise added for continuing the heat insulation reaction to obtain an intermediate product (a zwitterionic compound) with the structure shown as formula (IV); an HY acid is dropwise added to aqueous solution of the zwitterionic compound to obtain a target product after full reaction at the temperature of 60-100 DEG C. The designed ionic liquid is hydrostable, almost has no steam pressure, especially has strong acidic properties, exhibits good catalytic activity when being applied to pechmann reaction, and a synthetic method thereof has environment-friendly feature, thus being expected to be applied to organic synthesis and catalysis fields as an environment-friendly solvent and catalyst.

The invention relates to a recomposed escherichia coli base cell for efficient synthesis of terpene chemical compounds as well as a preparation method and application thereof. Particularly, an escherichia coli endogenous 2-C-methyl-D-erythritol-4-phosphoric acid (MEP) precursor pathway is reconstructed; the reconstructed escherichia coli base cell is utilized to perform the efficient biological synthesis of the terpene chemical compounds; the reconstruction of the precursor pathway mainly comprises the steps of fully digging the MEP precursor pathway gene modules of the sources of other natural microorganisms, screening gene modules with excellent characteristics to be expressed in the escherichia coli, and at the same time, performing the downstream synthesis pathway for integrally assembling the colibacillus chemical compounds in the reconstructed base cell, wherein the colibacillus chemical compounds include sesquiterpene chemical compounds such as amorphadiene, diterpene chemical compounds such as shell alkene, tetraterpenes chemical compounds such as lycopene, polyterpene chemical compounds, other terpene alkaloid chemical compounds and the like. The escherichia coli base cell can remarkably facilitate the synthesis of the terpene chemical compounds.

The invention relates to the field of lubricating liquid, in particular to lubricating liquid for food transporting equipment. The lubricating liquid is prepared from the following raw materials in parts by weight: 2-3 parts of water-soluble chitosan, 2-3 parts of triethanolamine citrate, 0.5-1 part of polyvinylpyrrolidone, 10-14 parts of mint extract, 8-14 parts of carboxylic acid, 2-4 parts of polyalkylene glycol, 3-5 parts of sodium octadecyl polyoxyethylene ether phosphate, 0.3-0.5 part of medical rust, 2-3 parts of a silicone defoamer, 1-2 parts of ethoxylated pentaerythritol tetra (methyl) acrylate, 1-2 parts of ethylparaben, 4-8 parts of sedoheptulose 7-phosphoric acid, and 20-26 parts of simethicone. The lubricating liquid disclosed by the invention is free from toxins, difficult to volatilize, and high in specific heat capacity, has certain heat-conducting properties for heat produced by equipment abrasion, has certain attraction capacity on bacteria and pests, has excellent capacity of killing the bacteria and the pests, has quite significant antirust capacity, and does not have crystal deposition, and the kinematic viscosity of the lubricating liquid is 10-20% higher than that of general lubricating liquid.

The present invention relates to a process comprising reacting p-fluorobenzaldehyde, 4-methyl-3-oxopentanenitrile and urea in a first reaction mixture comprising a first organic solvent, thereby obtaining an intermediate mixture comprising an oxo-pyrimidine-carbonitrile; and oxidizing the oxo-pyrimidine-carbonitrile by contacting the intermediate mixture or organic extract with an organic hydroperoxide, thereby obtaining a hydroxyl-pyrimidine carbonitrile.