CAS: 139177-63-2; Holmium(Iii) Trifluoromethanesulfonate

专利信息

专利号:US-11926589-B2
优先权日:2019-07-09
标 题 :Process for the synthesis of non-racemic cyclohexenes
发明人：REISMAN SARAH; ROMBOLA MICHAEL; LADD CAROLYN L; MCLAUGHLIN MARTIN JOHN; ZUEND STEPHAN; GOETZ ROLAND
权利人:BASF CORP; CALIFORNIA INST OF TECHN
摘要:This invention relates to a process for the synthesis of a non-racemic cyclohexene compound of formula (I) by a Diels-Alder reaction of a compound of formula (II) with a compound of formula (III) wherein R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , R 8 , R 9 and Y have the meanings as defined in the description in the presence of a catalyst comprising at least one m-valent metal cation M m+ wherein the metal M is selected from Scandium (Sc), Yttrium (Y), Lanthanum (La), Cerium (Ce), Praseodymium (Pr), Neodymium (Nd), Promethium (Pm), Samarium (Sm), Europium (Eu), Gadolinium 15 (Gd), Terbium (Tb), Dysprosium (Dy), Holmium (Ho), Erbium (Er), Thulium (Tm), Ytterbium (Yb), Lutetium (Lu), Gallium (Ga) and Indium (In), and m is an integer of 1, 2 or 3, and a chiral ligand of the formula (IV) wherein R 10a , R 10b , R 10c , R 10d , R 10a′ , R 10b′ , R 10c′ , R 10d′ , Z and Z′ have the meanings as defined in the description.

专利号:US-10294336-B2
优先权日:2014-11-27
标题 :Synthesis of polymer polyols in unsaturated polyols, polymer polyols and their use
发明人：KOENIG CHRISTIAN; EMGE ANDREAS; OTERO MARTINEZ IRAN
权利人:BASF SE
摘要:The present invention relates to the synthesis of polymer polyols in unsaturated polyols as liquid phase, polymer polyols and their use.

专利号:WO-2017030685-A1
优先权日:2015-08-14
标题 :One-pot synthesis of anhydropentitol mono- and diethers
发明人：STENSRUD KENNETH
权利人:ARCHER DANIELS MIDLAND CO
摘要:A process for preparing anhydropentitol mono- and diethers from C 5 sugar alcohols is described. The process involves performing in a single reaction vessel consolidated reactions that a) cyclize dehydratively a linear C 5 sugar alcohol and b) etherify a resulting anhydropentitol. Each of the reactions is catalyzed by a very low amount of a water-tolerant Lewis acid catalyst relative to the starting sugar-alcohol. Depending on the reaction conditions, the synthesis method is efficient, selective and affords good yields of mono- and diethers. The anhydropentiol ethers can serve as renewable substitute precursors of petroleum incumbents for use in the making of surfactants and plasticizers.

专利号:WO-2017100402-A1
优先权日:2015-12-11
标 题 :One-pot synthesis of anhydropentitol esters from pentitols, catalyzed by water-tolerant lewis acids
发明人：STENSRUD KENNETH
权利人:ARCHER DANIELS MIDLAND CO
摘要:A procedure for preparing anhydropentitol mono, di, and tri esters is described. The process is performed in a single vessel and involves sequential dehydrative cyclization and carboxylic acid acylation steps. Each step is catalyzed by low loadings of a water-tolerant Lewis acid catalyst. The method of synthesis is efficacious and depending on the reaction condition, generates modest to high yields of the target mono-, di-, and triesters. The esters can be practical surrogates of incumbent petroleum materials of similar structure used for surfactants and plasticizers.

专利号:US-2024199680-A1
优先权日:2021-04-02
标 题:Synthesis of fluorinated cyclic dinucleotides
发明人：AN CHIHUI; FIER PATRICK S; HIRAGA KAORI; LIU ZHIJIAN; MARSHALL NICHOLAS M; MCINTOSH JOHN; MILLER STEVEN P; MOORE JEFFREY C; MURPHY GRANT S; OBLIGACION JENNIFER V; PAN WEILAN; PENG FENG; SALEHI MARZIJARANI NASTARAN; WINSTON MATTHEW S
权利人:MERCK SHARP & DOHME LLC
摘要:The present invention relates to efficient processes useful in the preparation of fluorinated cyclic dinucleosides, such as [P(R)]-2′-deoxy-2′-fluoro-5′-O—[(R)-hydroxymercaptophosphinyl]-P-thio-β-D-arabino-adenylyl-(3′→5′)-3′-deoxy-3′-fluoroguanosine cyclic nucleotide, which is also known as (2R,5R,7R,8S,10R,12aR,14R,15S,15aR,16R)-7-(2-amino-6-oxo-1,6-dihydro-9H-purin-9-yl)-14-(6-amino-9H-purin-9-yl)-15,16-difluoro-2, 10-bis(sulfanyl)octahydro-2H,10H, 12H-2λ 5 ,10λ 5 -5,8-methanofuro[3,2-1][1, 3,6,9,11,2,10]pentaoxadiphosphacyclotetradecine-2,10-dione. The present invention also encompasses intermediates useful in the disclosed synthetic processes and the methods of their preparation.

专利号:US-10519124-B2
优先权日:2014-04-10
标题 :Synthesis of R-glucosides, sugar alcohols, reduced sugar alcohols, and furan derivatives of reduced sugar alcohols
发明人：STENSRUD KENNETH; Ma chi-cheng; MARTIN KEVIN
权利人:ARCHER DANIELS MIDLAND CO
摘要:Disclosed herein are methods for synthesizing 1,2,5,6-hexanetetrol (HTO), 1,6 hexanediol (HDO) and other reduced polyols from C5 and C6 sugar alcohols or R glycosides. The methods include contacting the sugar alcohol or R-glycoside with a copper catalyst, most desirably a Raney copper catalyst with hydrogen for a time, temperature and pressure sufficient to form reduced polyols having 2 to 3 fewer hydoxy groups than the starting material. When the starting compound is a C6 sugar alcohol such as sorbitol or R-glycoside of a C6 sugar such as methyl glucoside, the predominant product is HTO. The same catalyst can be used to further reduce the HTO to HDO.