17results about "Organic decomposition" patented technology

A catalyst composition and method of use for the depolymerization of polyolefin waste into useful petrochemical products is described. The composition is a composite of at least one zeolite catalyst and one or more co-catalysts that are solid inorganic materials. These catalyst composites are used in conjunction with heat to increase the depolymerization reaction rate of the feed stream and suppress the poisoning effects of non-polyolefin polymers that may be present. This reduces residence time in the depolymerization unit, resulting in a more efficient process.

A system for decarboxylating and infusing an organic material is disclosed, including a heated reservoir including a spout to fittingly engage with a complimentary portion of a housing. The decarboxylation and infusion apparatus is in operable communication with a touchscreen user interface whereon a user selects decarboxylation and infusion settings, the heated reservoir including a mixing element to agitate an organic material and solvent disposed therein, the spout to prevent counterrotation caused by the mixing element. A fan actively cools the heated reservoir, the fan in communication with a vent having a filter, the vent to expel and deodorize air emitted therefrom.

A method for producing acrylic acid by dehydration of lactic acid and an apparatus for making the same are provided.

The application discloses a synthesis method of monofluoro olefin compound and belongs to the technical field of organic synthesis. 3 )‑F bond and C(sp 2 )‑F bond are broken to obtain a trisubstituted (E) monofluoro olefin compound 3; when the olefin substrate is gem-di-fluoro olefin 4, a di / trisubstituted (E) monofluoro olefin compound 5 is also obtained at a high yield and excellent stereoselectivity. The synthesis method has the advantages of cheap catalyst, simple and easily-obtained raw materials and good substrate applicability, and the synthesized product is a very valuable fluorinated component, and a new method is provided for modification of fluorine-containing molecules.

The invention belongs to the technical field of organic photochemical synthesis and catalysis, and discloses application of a spin catalyst based on a macrocyclic gadolinium complex in photooxidation reduction reaction. According to the spin catalyst, the high-spin ground state of gadolinium ions is utilized, intersystem crossing of a photoreaction intermediate singlet-state free radical ion pair to a triplet-state free radical ion pair is promoted through the paramagnetic effect, and the reverse electron transfer process is effectively inhibited. Particularly, in a water-containing system, the Gd-DOTP complex induces solvent water molecules to form an ordered hydrogen bond network through a phosphonic acid group on a ligand, a proton-mediated spin transmission channel is constructed, and efficient catalysis can be achieved under the millimole-level low concentration (0.53.0 mM). The system obviously inhibits BET, improves the organic photooxidation reduction reaction efficiency, is suitable for reactions such as halogenated aromatic hydrocarbon dehalogenation and benzene oxidation hydroxylation, and has the advantages of small catalyst dosage, good stability, wide application range and the like.

A mechanochemical process for producing valuable products free of persistent organic pollutants and other organohalogen compounds from waste of sorted and mixed plastics and plastic laminates contaminated with persistent organic pollutants and / or other organohalogen compounds, wherein (i) the waste is crushed to achieve the narrowest possible particle size distribution, (ii) the crushed waste is placed in a mill containing grinding balls and further crushed by grinding, (iii) at least one dehalogenating agent is added in a molar excess relative to the amounts of persistent organic pollutants and / or other organohalogen compounds present, (iv) the mixture of ground crushed waste and dehalogenating agent is further ground and the grinding is stopped after a preselected time.(v) separates the resulting valuable products free of persistent organic pollutants and other organohalogen compounds from the milled balls and separates the resulting halogen-containing, water-soluble products by washing with aqueous solvents and / or does not wash out the resulting halogen-containing, water-insoluble products, but leaves them as fillers in the valuable products and (vi) checks the washed valuable products after drying and the unwashed valuable products to see if they still contain persistent organic pollutants and / or other organohalogen compounds, wherein (vii) at least one additive is added before and / or after process step (iv); valuable products produced using the mechanochemical process and their use.

The invention relates to the technical field of iodinated organic matter deiodination, in particular to a deiodination method of an iodine-containing aqueous solution. According to the method, efficient deiodination of iodinated organic matters such as iopamidol and iodinated phenol in the iodine-containing aqueous solution is promoted through radiation illumination treatment of a 222nm ultraviolet lamp. In addition, it is found that by prolonging the illumination time, enhancing the illumination intensity or increasing the pH value of the buffer solution, the deiodination reaction is obviously promoted. The deiodination method provided by the invention is convenient to operate, does not need to add chemical reagents, is harmless to the health of a user, and is an economical, efficient and green deiodination method.

Provided are a method for producing an acrylic acid through dehydration of lactic acid, and an apparatus for manufacturing the same.

The application discloses a kind of polydifluoroalkylation derivatives of terpene olefin and preparation method thereof, the preparation method includes under inert gas protection, terpene olefin, photosensitizer, cobalt catalyst, organic reducing agent, base, fluorine reagent and organic solvent are sequentially loaded into reaction container, and the reaction system is obtained;Under inert gas protection, the reaction system is reacted at 40~60 ℃ under light condition;After reaction, the system is filtered, rotary evaporated and chromatographically purified, and the polydifluoroalkylation of terpene olefin is completed.The method of the application can efficiently, high selectivity and high yield realize the polydifluoroalkylation reaction of terpene olefin, without using precious metal catalyst, with good functional group compatibility, high yield, and the highest yield can reach 93%.

Disclosed in the present disclosure is a method for preparing 16alpha-hydroxyprednisolone, belonging to the technical field of medicine preparation and processing. In the method, 21-hydroxypregna-1,4,9(11),16-tetraene-3,20-dione-21-acetate is used as a starting material, and subjected to oxidation, bromo-hydroxylation, debromination and alcoholysis, so as to prepare 16alpha-hydroxyprednisolone. The method for preparing 16alpha-hydroxylprednisolone of the present disclosure can effectively control the generation of impurities in the reaction process by improving the disadvantages of traditional processes, and has a mild reaction process and a high overall conversion rate; and the method of the present disclosure has low requirements for a reaction device and low operation costs, is easy to operate, is suitable for industrial production, and has a good market prospect.

The present invention relates to a method for cleaving protecting groups from organic compound and cleaving organic compounds from a support, the method comprising subjecting the organic compound or the organic compound coupled to a support via a linker to a composition comprising: i) at least a Lewis acid, ii) at least a Brønsted acid, and optionally iii) at least a solvent. Also encompassed is a composition and several methods for cleaving protecting groups and / or linkers comprising the application of the composition.

This invention relates to a method for producing acrylic acid by a lactate dehydration reaction and an apparatus for producing the same.

The application belongs to the field of organic photochemical synthesis and catalysis technology, and discloses application of a spin catalyst based on a macrocyclic gadolinium complex in a photo-oxidation-reduction reaction. The spin catalyst utilizes the high-spin ground state of gadolinium ions, promotes intersystem crossing of a singlet radical ion pair to a triplet radical ion pair in a photo-reaction intermediate through paramagnetic effect, and effectively inhibits the reverse electron transfer process. In particular, the Gd-DOTP complex in an aqueous system induces the formation of an ordered hydrogen bond network of solvent water molecules through phosphonic acid groups on the ligand, constructs a proton-mediated spin transport channel, and can achieve efficient catalysis at a low concentration (0.5-3.0 mM) of millimolar level. The system significantly inhibits BET and improves the efficiency of organic photo-oxidation-reduction reactions, is suitable for halogenated aromatic hydrocarbon dehalogenation, benzylic oxidation hydroxylation and the like, and has the advantages of small catalyst dosage, good stability and wide application range.

The invention belongs to the technical field of organic synthesis, and discloses a method for preparing 1, 1-disubstituted olefin through rhodium-catalyzed decarboxylation cracking. The method comprises the following steps: in a protective atmosphere, taking an organic solvent as a reaction medium, and reacting beta, gamma-unsaturated alkenyl carboxylic acid with arylboronic acid under the action of alkali, a catalyst and silver salt to obtain the 1, 1-disubstituted olefin. The structure of the 1, 1-disubstituted olefin is shown in the specification. The method is simple and convenient to operate, mild in reaction condition, good in functional group compatibility and high in yield. Through a unique reaction path of decarboxylation cracking, the target 1, 1-disubstituted olefin can be accurately and specifically generated from the source. The method not only effectively avoids the generation of 1, 2-disubstituted regioisomer, but also inhibits the side reaction that double bonds are isomerized inwards to generate trisubstituted olefin with more stable thermodynamics in the aspect of mechanism, thereby fundamentally ensuring the structure uniqueness of the product and greatly simplifying the purification process.