CAS: 7783-35-9; Mercury(Ii) Sulfate

专利信息

专利号:US-8153839-B2
优先权日:2005-09-14
标题:Method for synthesis of keto acids or amino acids by hydration of acetylene compound
发明人：OGO SEIJI; FUKUZUMI SHUN-ICHI
权利人:OGO SEIJI; FUKUZUMI SHUN-ICHI; JAPAN SCIENCE & TECH AGENCY
摘要:An object of the present invention is to provide a method for synthesis of keto acids by hydration of an acetylene compound (acetylene-carboxylic acids) under mild conditions free from harmful mercury catalysts and a method for synthesis of amino acids from acetylene-carboxylic acids in a single container (one-pot or tandem synthesis). In one embodiment of the method according to the present invention for synthesis of keto acids, acetylene-carboxylic acids is hydrated in the presence of a metal salt represented by General Formula (1), n nwhere M 1 represents an element in Group VIII, IX, or X of the periodic table, and X 1 , X 2 , or X 3 ligand represents halogen, H 2 O, or a solvent molecule, and k represents a valence of a cation species, and Y represents an anion species, and L represents a valence of the anion species, and each of K and L independently represents 1 or 2, and k×m=L×n.

专利号:US-12358871-B2
优先权日:2019-05-15
标 题:Photochemical synthesis of vitamin D3 using sensitizers
发明人：DATLA ANUPAMA; NAGRE PRASHANT; TAMORE JAGDISH; TRIVIKRAM SREENATH; DEGAONKAR GAJANAN
权利人:FERMENTA BIOTECH LTD
摘要:The present invention discloses an improved photochemical synthesis of vitamin D3 from 7-dehydrocholesterol alone or in combination with sterol precursors in presence of the photosensitizer of Formula I in high yield and with reduced levels of impurities.

专利号:WO-9939201-A1
优先权日:1998-02-03
标 题 :SOLUTION AND SOLID PHASE SULFOXIDE GLYCOSYLATION: SYNTHESIS OF β-LINKED OLIGOSACCHARIDES USING 2-DEOXY-2-N-TRIFLUOROACETAMIDO-GLYCOPYRANOSYL DONORS
发明人：SILVA DOMINGOS; SOFIA MICHAEL J
权利人:INTERCARDIA RESEARCH LAB INC
摘要:The invention relates to a process for the synthesis of β-oligosaccharides. β-oligosaccharides are synthesized using alkylsulfenyl- or an arylsulfenyl-2-deoxy-2-N-trifluoroacetamidoglycopyranoses as glycosyl donors via the sulfoxide glycosylation, both in solution and solid phases. Once activated under the glycosylation conditions, these donors afford the respective β-glycosides exclusively and in high yield. Since the trifluoroacetamido group is easily removed under mild conditions, the corresponding amino group can be appropriately derivatized, even in the presence of unprotected hydroxyl groups. Disaccharide libraries are designed, constructed and analyzed. The invention also relates to a process for synthesizing the glycosyl donor.

专利号:US-5002641-A
优先权日:1990-06-28
标题:Electrochemical synthesis of niacin and other N-heterocyclic compounds
发明人：TOOMEY JR JOSEPH E
权利人:REILLY IND INC
摘要:An electrochemical oxidation of a pi-deficient N-heterocyclic precursor compound having an oxidizable organic group attached by a carbon-to-carbon linkage. This precursor compound is at least sparingly water soluble. The preferred electro-oxidation is conducted at an effective anode and in a medium which consists essentially of water, carboxylic acid, and the precursor compound. Preferred are electro-oxidations of substituted pyridine and quinoline bases and a particularly preferred aspect provides a convenient electrochemical synthesis of niacin from 3-methylpyridine.

专利号:WO-2024056117-A1
优先权日:2022-09-16
标题:Method of electrochemical synthesis of lambda5- iodanes derived from iodoarenes in water-based solutions
发明人：BYSTRON TOMAS; JIRASKO MARTIN; DEVADAS BALAMURUGAN; KVICALA JAROSLAV
权利人:VS CHEMICKO TECHNOLOGICKA V PRAZE
摘要:The present invention relates to a method for electrochemical synthesis of λ 5-iodanes, which comprises the following steps: i) providing an aqueous solution of iodoarene of general formula Ar-I, wherein Ar is (C6 to C10)aryl, which may optionally be substituted with one or more substituents selected from the group comprising (C1 to C6)alkyl, (C1 to C10)aryl, (C1 to C6)alkoxy group, -COOH, -SO3H, halogen, -NO2, -C(=O)-NHR, -C(=O)-NR2, wherein R is independently selected from the group comprising (C1 to C10)alkyl, linear methoxy-(C2 to C5)alkyl, (C1 to C6)trialkylammonium group; ii) placing the aqueous solution of iodoarene from step i) into an electrochemical cell (1), containing a cathode and an anode, wherein the cathode is the counter electrode (1f) and the anode is the working electrode (1g) and comprises a surface containing a boron doped diamond active layer possessing semiconducting or metallic conductivity, which is in direct contact with the aqueous solution of iodoarene; iii) determining the electrode potential of the anode at the anode; electrolyte interface suitable for the oxidation reaction of the iodoarene; iv) applying the electrode potential, determined in step iii), to the aqueous solution of iodoarene of general formula (I) to cause its oxidation into λ 5-iodane of general formula ArI(OR1)(OR2)(OR3)(OR4) and/or ArI(OR1)(OR2)(O) and/or ArIO2, wherein Ar is defined in step i), and R1, R2, R3, R4 are independently selected from the group comprising hydrogen; acyl, which may be attached to the same or different aromatic ring as the iodine atom; (C2 to C6)alkylacyl; sulfonyl group that may be attached to the same or different aromatic ring as iodine atom; (C2 to C6)alkylsulfonyl.

专利号:US-7427341-B2
优先权日:2003-08-15
标 题 :System for synthesis of electrode array
发明人：WANG YOUQI; DEVENNEY MARTIN; HE TING
权利人:SYMYX TECHNOLOGIES INC; HONDA R & D AMERICAS INC
摘要:Systems and methods for preparing electrocatalysts are disclosed. The system includes a high temperature synthesis device for preparing an array of electrocatalysts as electrolytic surfaces of working electrodes. At least a portion of the electrolytic surfaces are defined by different materials. The device includes a plurality of openings for receiving the array of working electrodes and a mask having a plurality of openings configured for exposing at least a portion of each of the working electrodes for forming the electrolytic surfaces thereon.