CAS: 37222-66-5; Potassium Peroxymonosulfate Sulfate

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CAS号14996-02-2 Hydrogen Sulfate | CAS号15541-45-4 bromate | CAS号15454-31-6 iodate | CAS号7782-50-5 氯气

专利信息

专利号:US-9011694-B2
优先权日:2010-09-28
标 题 :Method for the synthesis of tetravalent manganese feroxyhite for arsenic removal from water
发明人：MITRAKAS MANASSIS; SYMEONIDIS KONSTANTINOS; TRESINTSI SOFIA
权利人:MITRAKAS MANASSIS; SYMEONIDIS KONSTANTINOS; TRESINTSI SOFIA; LOUFAKIS CHEMICALS S A
摘要:The present invention refers to a method for the synthesis of an adsorbing material consisting of a single-phase tetravalent manganese feroxyhite (Å?-Fe (1-x) Mn x OOH), in which a percentage of 0.05 to 25% of iron atoms has been isomorphically substituted by Mn(IV) atoms. Its production takes place in a continuous two-stage flow reactor at weakly acidic conditions (pH 4-7) and high redox (300-800 mV). The material can be used for the removal of both pentavalent and trivalent arsenic as well as other heavy metals form water. More specifically, its adsorption capacity and selectivity depending on the trivalent and pentavalent arsenic water content, are determined by the manganese percentage and the compact or hollow morphology of its structural unit which can be both controlled by the parameters of the synthesis procedure.

专利号:US-2005165238-A1
优先权日:2001-12-19
标题 :Oxidation process for the preparation of intermediates useful in the synthesis of diarylpyridines
发明人：CANNATA VINCENZO; SORIATO GIORGIO; VERZINI MASSIMO
摘要:An oxidation process for the preparation of intermediates useful in the synthesis of diarylpiridines is described. The oxidation of the thioether of formula III to give the sulfone of formula II is is carried out with a mixture of peracetic acid and hydrogen peroxide as oxidant, in the presence of methanesulphonic acid and in the absence of a catalylst.

专利号:US-5554788-A
优先权日:1992-10-01
标 题 :Process for the stereoselective synthesis of 3-substituted 2-thiomethylpropionic acids
发明人：HOLLA WOLFGANG; KAMMERMEIER BERNHARD; BECK GERHARD
权利人:HOECHST AG
摘要:PCT No. PCT/EP93/02673 Sec. 371 Date May 15, 1995 Sec. 102(e) Date May 15, 1995 PCT Filed Sep. 30, 1993 PCT Pub. No. WO94/00789 PCT Pub. Date Apr. 14, 1994Process for the stereoselective synthesis of 3-substituted 2-thiomethylpropionic acids Compounds of the formula I I in which R1 and R2 are as defined can be prepared stereoselectively by reaction of acrylic acid or derivatives thereof or propionic acid or derivatives thereof with a chiral auxiliary, reaction with a mercaptan, stereoselective alkylation and subsequent hydrolysis and oxidation.

专利号:US-6958420-B2
优先权日:2002-07-19
标题:Synthesis of aminoarylboronic esters and substituted anilines from arenes via catalytic C-H activation/borylation/amination and uses thereof
发明人：MALECZKA JR ROBERT E; SMITH III MILTON R; HOLMES DANIEL
权利人:UNIV MICHIGAN STATE
摘要:A process is described for synthesizing aminoarylboronic esters of the general formula n n nwherein R, R 2 , and R 3 are each an alkyl, aryl, vinyl, alkoxy, carboxylic esters, amides, or halogen; Ar is any variety of phenyl, naphthyl, anthracyl, heteroaryl; and R 1 is alkyl, hydrogen, or aryl. The aminoarylboronic esters are produced via the metal-catalyzed coupling of arylboronic esters of the general formula n n nwherein R and R 1 are any non-interfering group and X is chloro, bromo, iodo, triflates, or nonaflates to amines (primary and secondary). In particular, a process is described for the synthesis of the aminoarylboronic esters via a step-wise or tandem process in which one catalytic event is a metal-catalyzed borylation and the other catalytic event is a metal-catalyzed amination.

专利号:US-8080397-B2
优先权日:1999-01-29
标 题 :Biocatalystic synthesis of quinic acid and conversion to hydroquinone by recombinant microbes
发明人：FROST JOHN W; FROST KAREN M
权利人:FROST JOHN W; FROST KAREN M; UNIV MICHIGAN STATE
摘要:A bioengineered synthesis scheme for the production of quinic acid from a carbon source is provided. Methods of producing quinic acid from a carbon source based on the synthesis scheme as well as conversion of quinic acid to hydroquinone are also provided.

专利号:US-10807962-B2
优先权日:2017-04-14
标 题 :Process for the synthesis of firocoxib
发明人：CELESTINI PAOLO; BARETTI SERGIO; PIZZATTI ENRICA
权利人:COSMA S P A
摘要:The present invention concerns a process for the preparation of firocoxib, i.e. 3-(cyclopropylmethoxy)-5,5-dimethyl-4-(4-methylsulfonylphenyl)-furan-2-one, comprising steps (a)-(g), wherein the process provides for step (d) of the reaction of a new intermediate, i.e. 2-methyl-1-[4-(methylsulfanyl)phenyl]-1-oxopropan-2-yl (acetyloxy)acetate (compound VII) in the same organic solvent of step (a) in the presence of a catalyst and a phase transfer catalyst solution in the same organic solvent with hydrogen peroxide.