CAS: 12026-57-2; Phosphomolybdic Acid Solution

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CAS号55624-58-3 Na2HPMo12O40 * ...

专利信息

专利号:US-7514559-B2
优先权日:2004-03-22
标题 :Catalyst for synthesis of 2- and 4-picolines
发明人：DUTTA PASHUPATI; ROY SUBHASH CHANDRA; ROY SHYAM KISHORE; GOSWAMI TARUN KANTI
权利人:COUNCIL SCIENT IND RES
摘要:The present invention provides a catalyst composite for the synthesis of 2- and 4-picolines and a process for the preparation thereof and use thereof for the synthesis of 2- and 4-Picolines.

专利号:US-10011580-B2
优先权日:2016-04-21
标题:Diastereoselective synthesis of (±)-epianastrephin, (±)-anastrephin and analogs thereof
发明人：WALSE SPENCER S; KUZMICH DANIEL
权利人:US AGRICULTURE
摘要:A process for the synthesis of trans-fused γ-lactones having Formula (IV) from substituted cyclic ketones having Formula (I). A diastereoselective synthesis of (±)-epianastrephin (1) (wherein: R 1 is ethenyl, R 2 and R 3 is methyl, and n is 1), (±)-anastrephin (2) (wherein: R 2 is ethenyl, R 1 and R 3 is methyl and n is 1), and analogs thereof (wherein: R 1 is H, C 1-5 alkyl, C 2-6 alkenyl or C 2-6 alkynyl, R 2 is H, C 1-5 alkyl, C 2-6 alkenyl or C 2-6 alkynyl, R 1 and R 2 together with the carbon atom they are attached form a C 3-6 cycloalkyl ring, R 3 is C 1-5 alkyl and n is 0-2):

专利号:US-6063919-A
优先权日:1998-08-14
标题:Process for the synthesis of exochelins
发明人：GAUDIOSO LARRY A; WEGLARZ MICHAEL A
权利人:KEYSTONE BIOMEDICAL INC
摘要:A process for the synthesis of an Exochelin comprising the steps of generating L-N-[(2-benzyloxy-(benzoyl)] serine or L-N-[2-benzyloxy (benzoyl)] threonine, creating L-N-t-Boc- epsilon -hydroxynorleucine and reacting same to produce L-N-Boc- epsilon -bromonorleucine trimethylsilylethyl ester, providing a dicarboxylic acid and forming an O-benzyl methyl hydroxamate from the dicarboxylic acid, coupling the O-benzyl methyl hydroxamate with the L-N-Boc- epsilon -bromonorleucine trimethylsilylethyl ester to give an L-N2-Boc-N6-methyl,N6-(benzyloxy) lysine 2-trimethylsilylethyl ester which incorporates the dicarboxylic acid as modified above, removing the N-tert-butoxycarbonyl protecting group from the L-N2-Boc-N6-methyl, N6-(benzyloxy) lysine 2-trimethylsilylethyl ester to yield a substituted lysine, and coupling the same with the L-N-[2-benzyloxy (benzoyl) serine or -threonine to yield a 2-trimethyl silylethyl ester of dibenzyl Exochelic acid, transforming the 2-trimethyl silylethyl ester of dibenzyl Exochelic acid to dibenzyl Exochelic acid, preparing benzyl epi-cobactin, forming an ester bond between the dibenzyl Exochelic acid and benzyl epi-cobactin to form an intermediate, and, hydrogenolytically removing three benzyl groups from said intermediate, resulting in the synthesized Exochelin. More particularly, a synthesis for Exochelin 786SM (R) is disclosed wherein the dicarboxylic acid is suberic acid and the serine form is utilized.

专利号:US-11168050-B2
优先权日:2014-03-27
标 题 :Efficient synthesis of amines and amides from alcohols and aldehydes by using cascade catalysis
发明人：CÓRDOVA ARMANDO; BERGLUND PER; ANDERSON MATTIAS; AFEWERKI SAMSON
权利人:XP CHEMISTRIES AB
摘要:The present invention relates generally to an eco-friendly methodology for the conversion of alcohols and aldehydes to amines and amides using an integrated enzyme cascade system with metal- and organocatalysis. More specifically, the present invention relates to synthesis of capsaicinoids starting from vanillin alcohol and using a combination of an enzyme cascade system and catalysts. Furthermore, the method also relates to synthesis of capsaicinoids derivatives starting from vanillin alcohol derivatives and using a combination of an enzyme cascade system and catalysts.

专利号:US-9630923-B2
优先权日:2013-07-09
标题:Biocatalyzed synthesis of the optically pure (R) and (S) 3-methyl-1,2,3,4-tetrahydroquinoline and their use as chiral synthons for the preparation of the antithrombic (21R)- and (21S)-argatroban
发明人：GRISENTI PARIDE
权利人:EUTICALS SPA; EUTICALS SPA
摘要:The present invention relates to the biocatalyzed synthesis of enantiomerically pure (3R) and (3S)-methyl-1,2,3,4-tetrahydroquinoline. Said enantiomerically pure compounds are useful as chiral synthons in organic synthesis and, in particular, for the preparation of diastereomerically pure (21R) and (21S)-agratroban and its analogs. New compounds used as intermediates in the process of the invention are also disclosed.

专利号:US-2025026768-A1
优先权日:2023-06-30
标题:Method for the synthesis of axially chiral organoboron compounds
发明人：PING YIFAN; CHE CHI-MING
权利人:LABORATORY FOR SYNTHETIC CHEMISTRY AND CHEMICAL BIOLOGY LTD
摘要:A highly efficient and atroposelective Rh-catalyzed [2+2+2] cycloaddition for the synthesis of axially chiral aryboron compounds is developed. The reactions of diynes and alkynylborons smoothly occur in an atom-economical manner, affording a variety of C—B atropisomers in excellent yields and enantioselectivities. The protocol features mild conditions, broad substrate scope, and good functional tolerance. The obtained C—B atropisomers show powerful synthetic applications in terms of producing novel chiral phosphine ligands.