Abstract:
The invention relates to a safe and efficient process for the solvent removal and recovery by distillation in a process for the preparation of ω-nitrooxy-C3-10alkane-1-ols. The process is safer to operators and allows to obtain advantageous yields on industrial scale.
Abstract:
A process for synthesizing isooctyl nitrate in a continuous flow reactor comprises flowing a H2SO4-HNO3 mixture within a flow reactor, flowing isooctyl alcohol into said flow reactor so as to mix the isooctyl alcohol with the H2SO4-HNO3 mixture and produce a reaction mixture stream flowing in said reactor, maintaining the reaction mixture stream flowing in said flow reactor at a reaction temperature within in the range −10° to 35° C. inclusive, and wherein the residence time of the reaction mixture stream in the flow reactor is greater than or equal to 5 seconds and less than or equal to 40 seconds, and wherein the H2SO4 of the H2SO4-HNO3 mixture is H2SO4 having a concentration of in the range of 85 to 95% inclusive, more desirably 88 to 92% inclusive, most desirably of 90%.
Abstract:
A process for synthesizing isooctyl nitrate in a continuous flow reactor comprises flowing a H2SO4—HNO3 mixture within a flow reactor, flowing isooctyl alcohol into said flow reactor so as to mix the isooctyl alcohol with the H2SO4—HNO3 mixture and produce a reaction mixture stream flowing in said reactor, maintaining the reaction mixture stream flowing in said flow reactor at a reaction temperature within in the range −10° to 35° C. inclusive, and wherein the residence time of the reaction mixture stream in the flow reactor is greater than or equal to 5 seconds and less than or equal to 40 seconds, and wherein the H2SO4 of the H2SO4—HNO3 mixture is H2SO4 having a concentration of in the range of 85 to 95% inclusive, more desirably 88 to 92% inclusive, most desirably of 90%.
Abstract translation:在连续流动反应器中合成硝酸异辛酯的方法包括使流动反应器内的H 2 SO 4 -HNO 3混合物流动,将异辛醇流入所述流动反应器中,以将异辛醇与H 2 SO 4 -HNO 3混合物混合,并产生流动的反应混合物流 在所述反应器中,将反应混合物流保持在所述流动反应器中,反应温度在-10℃至35℃的范围内,其中反应混合物流在流动反应器中的停留时间大于或等于 等于5秒且小于或等于40秒,并且其中H 2 SO 4 -HNO 3混合物的H 2 SO 4为浓度为85-95%(含)范围内的H 2 SO 4,更优选为88-92%,最优选为 90%。
Abstract:
This invention relates generally to enantiomerically enriched C—H activated ruthenium olefin metathesis catalyst compounds which are stereogenic at ruthenium, to the preparation of such compounds, and the use of such catalysts in the metathesis of olefins and olefin compounds, more particularly, in the use of such catalysts in enantio- and Z-selective olefin metathesis reactions. The invention has utility in the fields of catalysis, organic synthesis, polymer chemistry, and industrial and fine chemicals chemistry.
Abstract:
Mass production of industrial explosives with one-tenth of the cost of the current production method—Nitric acid 98% removal of the chemical reaction producing explosive materials—Increasing the production safety—Producing ammonium sulfate, a chemical fertilizer, as a byproduct—Supporting the production of different explosives such as TNT, nitroglycerine and etc.—decreasing the acid concentration in the product.
Abstract:
A method producing a surfactant from glycerol by converting glycerol, in a first step, to glycidol, polymerizing glycidol to an aliphatic alcohol and finally substituting a hydroxyl group with a substitute anion.
Abstract:
The present invention relates to a method for purifying naproxcinod comprising the steps of: a) dissolving or dispersing a mixture containing naproxcinod in an amount higher than 90% by weight in a solvent; b) cooling the solution or two phases dispersion under stirring to a temperature ranging from −20° C. to 10° C. c) optionally seeding the solution with crystals of naproxcinod d) stirring, by maintaining the temperature in the range from −40° C. to 10° C. e) collecting the formed solid by maintaining the temperature under 15° C. A further object of the invention is a crystalline form of naproxcinod.
Abstract:
The present invention relates to a method for purifying naproxcinod comprising the steps of: a) dissolving or dispersing a mixture containing naproxcinod in an amount higher than 90% by weight in a solvent; b) cooling the solution or two phases dispersion under stirring to a temperature ranging from −20° C. to 10° C. c) optionally seeding the solution with crystals of naproxcinod d) stirring, by maintaining the temperature in the range from −40° C. to 10° C. e) collecting the formed solid by maintaining the temperature under 15° C. A further object of the invention is a crystalline form of naproxcinod.
Abstract:
The present invention refers to a process for preparing a compound of general formula (A), as reported in the description, wherein R is a radical of a drug and R1-R12 are hydrogen or alkyl groups, m, n, o, q, r and s are each independently an integer from 0 to 6, and p is 0 or 1, and X is O, S, SO, SO2, NR13 or PR13 or an aryl, heteroaryl group, said process comprising reacting a compound of formula (B) R—COOZ (B) wherein R is as defined above and Z is hydrogen or a cation selected from: Li+, Na+, K+, Ca++, Mg++, tetralkylammonium, tetralkylphosphonium, with a compound of formula (C), as reported in the description, wherein R1-R12 and m, n, o, p, q, r, s are as defined above and Y is a suitable leaving group.
Abstract:
The present invention relates to a new process for the preparation of NO-donating compounds using a sulfonated intermediate. The invention relates to new intermediates prepared therein suitable for large scale manufacturing of NO-donating compounds. The invention further relates to the use of the new intermediates for the manufacturing of pharmaceutically active NO-donating compounds. The invention further relates to a substantially crystalline form of NO-donating NSAIDs, especially 2-[2-(nitrooxy)ethoxy]ethyl {2-[(2,6-dichlorophenyl)amino]phenyl}acetate, the preparation thereof and to pharmaceutical formulations containing said crystalline form and to the use of said crystalline form in the preparation of a medicament.