6 results about "Magnesium iodide" patented technology

The invention belongs to the technical field of organic chemical synthesis, and particularly relates to a synthetic method of deuterated toluene-D3, which comprises the following steps: reacting deuterated iodomethane with magnesium to obtain a Grignard reagent deuterated methyl magnesium iodide; and then carrying out coupling reaction on the deuterated methyl magnesium iodide and bromobenzene under the catalysis of a nickel metal catalyst to obtain the deuterated toluene-D3. The synthesis method solves the problems of many byproducts, high cost and low utilization rate of deuterated raw materials when the existing toluene synthesis process is used for preparing semideuterated toluene, realizes efficient synthesis of high-purity deuterated toluene-D3, greatly reduces the generation of polymethyl compounds, and is short in production period and simple in post-treatment.

This invention discloses a method for preparing high-compact lithium iron phosphate (LFP) cathode material and the prepared LFP cathode material. Using lithium, iron, phosphorus, and carbon sources as raw materials, the LFP cathode material is prepared via a high-temperature solid-state method. A flux is added to the raw materials, and the flux is selected from one or more of magnesium carbonate, magnesium iodide, and magnesium hydroxide. This invention uses magnesium-containing compounds such as magnesium carbonate, magnesium iodide, and magnesium hydroxide as fluxes, enabling the preparation of LFP cathode material under low-temperature sintering conditions. This significantly reduces energy consumption, effectively avoids the generation of magnetic foreign matter such as iron phosphate, reduces electron transport resistance, and promotes particle densification growth. The compacted density of the prepared LFP cathode material is not less than 2.467 g / cm³. 3 The resistivity is not higher than 32.5 Ω•cm.

The invention relates to the field of the oil production industry, and more particularly to heavy well kill fluids containing at least one of the compounds: calcium bromide, barium bromide, magnesium bromide, strontium bromide, zinc bromide, calcium iodide, barium iodide, magnesium iodide, strontium iodide and zinc iodide, and to methods for producing same. The invention discloses a method which makes it possible to broaden the range of components that can be used to produce heavy kill fluids. The claimed method makes it possible to produce a heavy well kill fluid using accessible salt solutions, wherein the resulting fluid has the necessary properties for effectively killing wells. The claimed method includes mixing solutions of salts at a molar ratio of 0.5-1.3:2, evaporating the resulting mixed solution to a density of 1400-2650 kg / m3, cooling the evaporated solution to a temperature of less than 25°C to form a precipitate, and filtering the evaporated solution to obtain a filtrate in the form of a heavy well kill fluid.

The invention belongs to the technical field of chemical synthesis, and particularly relates to a preparation method of 2-(4-(cyclopropyl formyl) phenyl)-2-methyl tert-butyl propionate 13C. Comprising the following steps: introducing carbon dioxide (13C) into tetrahydrofuran and a reagent A at-80 DEG C to synthesize cyclopropanecarboxylic acid (13C), wherein the reagent A is cyclopropyl magnesium bromide and cyclopropyl magnesium iodide: adding the cyclopropanecarboxylic acid (13C), dichloromethane, dimethyl hydroxylamine hydrochloride and 4-dimethylaminopyridine into triethylamine at room temperature, and reacting at the temperature of-80 DEG C to obtain the cyclopropanecarboxylic acid (13C). The preparation method comprises the following steps: synthesizing N-methoxy-N-methyl cyclopropanecarboxamide-13C from 1-ethyl-(3-dimethylaminopropyl) carbodiimide hydrochloride; the preparation method comprises the following steps: adding 2-(4-bromophenyl)-2-tert-butyl methyl propionate and tetrahydrofuran into a reaction kettle, dropwise adding an alkali solution at the temperature of-40 DEG C, and dropwise adding N-methoxy-N-methylcyclopropanecarboxamide-13C to synthesize 2-(4-(cyclopropanecarboxyl) phenyl)-2-tert-butyl methyl propionate-13C, thereby obtaining the 2-(4-(cyclopropanecarboxyl) phenyl)-2-tert-butyl methyl propionate-13C. The method is reasonable in route, low in cost, high in yield and easy to industrialize.

The invention discloses a method and device for generating a magnesium ion beam in an ion implanter, and relates to the technical field of semiconductor manufacturing, and the method comprises the following steps: heating a solid-state source containing magnesium iodide to form steam containing magnesium iodide; conveying the steam containing magnesium iodide into an ion source arc chamber; the steam entering the ion source arc chamber is ionized to form plasma containing Mg < + >; mg < + > in the plasma is led out to form a milliampere-level magnesium ion beam; the magnesium iodide-containing solid source is completely composed of magnesium iodide or a mixture of magnesium iodide and a magnesium simple substance. According to the method provided by the invention, milliampere-magnitude magnesium beams can be generated, and injection use can be met; the magnesium iodide and the magnesium elementary substance are mixed to be used as a solid-state source, so that the magnesium ion beam can be improved, the service time of the ion source is prolonged, and the maintenance frequency is reduced.

The invention relates to a solid, analgesic dosage form for oral administration with abuse deterrent properties, said dosage form comprising: (a) one or more active ingredients having potential for abuse selected from the group consisting of Alfentanil, Benzhydrocodone, Buprenorphine, Butorphanol, Codeine, Dihydrocodeine, Fentanyl, Hydrocodone, hydrocodone bitartrate, Hydromorphone, Levorphanol tartrate, Meperidine hydrochloride, Methadone, Morphine, Normethadone, Opium, Oxycodone, Oxymorphone, Pentazocine, Tapentadol, Tramadol, TEV-90105, ELI-202, or pharmaceutically acceptable salts and solvates thereof; (b) magnesium salt selected from the group consisting of consisting of Magnesium acetate, Magnesium benzoate, Magnesium bromate, Magnesium bromide, Magnesium carbonate, Magnesium chlorate, Magnesium chloride, Magnesium chromate, Magnesium citrate, Magnesium fluoride, Magnesium fluorosilicate, Magnesium formate, Magnesium glycinate, magnesium hydroaspartate, Magnesium hydroxide, Magnesium iodate, Magnesium iodide, Magnesium lactate, Magnesium L-threonate, Magnesium Malate, Magnesium molybdate, Magnesium nitrate, Magnesium oxalate, Magnesium oxide, Magnesium perchlorate, Magnesium phosphate, Magnesium selenite, Magnesium sulfate, Magnesium sulfate heptahydrate, Magnesium sulfite, Magnesium thiosulfate or a combination thereof, c) piperine.