9 results about "Nonane" patented technology

The application provides a preparation method of 3,7-dinitro-1,3,5,7-tetraazabicyclononane, comprising the following steps: 1) feeding a first material comprising urea and concentrated sulfuric acid and a second material comprising fuming nitric acid and concentrated sulfuric acid into a microchannel reactor to perform a first-stage nitration reaction, to obtain a first-stage nitration reaction liquid; 2) feeding the first-stage nitration reaction liquid into a first tubular reactor to perform a second-stage nitration reaction, to obtain a second-stage nitration reaction liquid; 3) feeding the second-stage nitration reaction liquid and water into a second tubular reactor to perform a hydrolysis reaction, to obtain a hydrolysis liquid; 4) feeding the hydrolysis liquid and a third material comprising polyoxymethylene and ammonia water into a third tubular reactor to perform a condensation cyclization reaction, to obtain 3,7-dinitro-1,3,5,7-tetraazabicyclononane. The preparation method has the advantages of high safety, less waste pollution and simple operation.

This invention discloses an iron complex with a triazacyclic nonane macrocyclic skeleton, its preparation method, and its applications, belonging to the field of coordination chemistry. The iron complex has a triazacyclic nonane macrocyclic skeleton with two acetate side groups and one pyridine-N derivative side group. The iron complex exhibits excellent catalytic activity in the aerobic oxidation of N-aryltetrahydroisoquinoline, while also possessing good stability. The solvents for the catalytic reaction are water and acetonitrile, resulting in low pollution. This invention features mild reaction conditions, simple synthesis operations, and straightforward post-processing, meeting the requirements of environmental friendliness and clean production.

Provided herein are crystalline forms of 5-(3,4-difluorobenzyl)-8-((1r,4r)-4-methylcyclohexyl)-6,9-dioxo-2,5,8-triazaspiro[3.5]nonane-2-carbaldehyde, compositions thereof, methods of preparation thereof, and methods of their uses.

The present invention provides a novel method for producing 1,9-nonane diol, with which 1,9-nonane diol can be efficiently produced with little environmental burden. This method for producing 1,9-nonane diol includes: (1) a step for blowing ozone gas into oleyl alcohol in such a way that ozone gas is blown until the ozone gas concentration at an outlet exceeds half the ozone gas concentration at an inlet, and the acid value of a treated product that has been treated with the ozone gas is 15 mg KOH / g or less; and (2) a step for hydrogenating, in the presence of a nickel catalyst, the treated product that has been treated with the ozone gas.

The invention discloses a preparation method of a moxifloxacin hydrochloride intermediate with high yield, high purity and low cost, and aims to overcome the technical defects of low resolution yield, need of additional acid addition, single solvent system, complex resolution agent recovery process and limited salifying efficiency in the prior art. According to the method, cis-8-benzyl-7, 9-dioxo-2, 8-diazabicyclo [4.3. 0] nonane (a compound as shown in a formula I) is taken as a raw material, N-acetylphenylalanine (including L-type and D-type) is taken as a resolving agent, acid does not need to be additionally added in a water-alcohol-ester ternary solvent system, efficient resolution of the enantiomer is directly realized through a salt forming reaction, and the yield of the enantiomer is increased. And the high-purity diazabicyclo compounds shown in the formulas IIIa and IIIb can be obtained without a refining step. The resolution yield can reach 90% or above, the recovery process of the resolving agent is simple and efficient, the recovery rate is larger than or equal to 95%, the resolving agent can be stably and circularly applied for five times or above, the resolution yield is still larger than or equal to 90% after the resolving agent is applied, the comprehensive production cost is reduced by 40%-60% compared with the prior art, and the method has outstanding industrial application advantages.

The application discloses a water-based electrolyte and a zinc ion hybrid capacitor comprising the water-based electrolyte. The water-based electrolyte is a water-based electrolyte for a zinc ion hybrid capacitor, and comprises a zinc salt, an electrolyte additive and water. The electrolyte additive comprises a first additive and a second additive. The first additive is an organic antifreezing agent, and the second additive is a heterocyclic nonane. The volume fraction of the organic antifreezing agent in the water-based electrolyte is greater than 0.1% and less than 40%. The water-based electrolyte of the application uses the organic antifreezing agent and the heterocyclic nonane as additives, and the two cooperate with each other. The water-based electrolyte can not only prevent freezing and avoid ice formation, but also modify the zinc negative electrode interface, reduce the Zn 2+ reduction rate, alleviate concentration polarization, thereby facilitating inhibition of dendrite growth, and can also inhibit the side reaction of the zinc negative electrode, thereby improving the low-temperature cycle performance of the zinc ion hybrid capacitor.