专利号:US-11306041-B2 优先权日:2017-03-30 标 题:Catalytic synthesis of super linear alkenyl arenes using rhodium catalysts 发明人:SCHINSKI WILLIAM; GOLDMAN ALAN; GUNNOE THOMAS B; WEBSTER-GARDINER MICHAEL S; SCHWARTZ NICHOLE 权利人:UNIV VIRGINIA PATENT FOUNDATION 摘要:Catalytic methods for synthesis of super linear alkenyl arenes and alkyl arenes are provided. The methods are capable of synthesizing super linear alkyl and alkenyl arenes from simple arene and olefin starting materials and with high selectivity for linear coupling. Methods are also provided for making a 2,6-dimethylnapthalene (DMN) or 2,6-methylethylnapthalene (MEN).
专利号:US-10829792-B2 优先权日:2017-03-21 标 题 :Biocatalytic synthesis of strained carbocycles 发明人:CHEN KAI; HUANG XIONGYI; KAN S B JENNIFER 权利人:CALIFORNIA INST OF TECHN 摘要:Provided herein are methods for producing products containing strained carbocycles, such as cyclopropene moieties and/or bicyclobutane moieties. The methods include combining an alkyne and a carbene precursor in the presence of a heme protein, e.g., a cytochrome P450, under conditions sufficient to form the strained carbocycle. Reaction mixtures for producing strained carbocycles are also described, as well as whole-cell catalysts comprising heme proteins and variants thereof for forming cyclopropenes, bicyclobutanes, and related products.
专利号:US-2009137828-A1 优先权日:2005-08-18 标 题 :Synthesis of 1A-Fluoro-25-Hydroxy-16-23E-Diene-26,27-Bishomo-20-Epi-Cholecalciferol 发明人:USKOKOVIC MILAN R; MARCZAK STANISLAW; LOO RALF; VAN DER SLUIS MARCEL; JANKOWSKI PAWEL; MAEHR HUBERT 权利人:BIOXELL SPA 摘要:The invention provides a method of producing 20-methyl vitamin D3 compounds of formula (I). The method includes allylic and olefin oxidation, de-carbonylation, carbonyl reduction, fluoride substitution, epoxide deoxygenation, and Wittig-type couplings.
专利号:US-8143437-B2 优先权日:2002-02-19 标题:Methods for synthesis of prodrugs from 1-acyl-alkyl derivatives and compositions thereof 发明人:GALLOP MARK A; XIANG JIA-NING; YAO FENMEI; BHAT LAXMINARAYAN; ZHOU CINDY X 权利人:GALLOP MARK A; XIANG JIA-NING; YAO FENMEI; BHAT LAXMINARAYAN; ZHOU CINDY X; XENOPORT INC 摘要:The present invention provides a method for synthesizing 1-(acyloxy)-alkyl derivatives from 1-acyl-alkyl derivatives, which typically proceeds stereospecifically, in high yield, does not require the use of activated intermediates and/or toxic compounds and is readily amendable to scale-up. The current invention also provides 1-acyl-alkyl derivatives of known drug components and methods for synthesizing these 1-acyl-alkyl derivatives.
专利号:US-4665222-A 优先权日:1980-01-31 标题 :Production of ethylene glycol from synthesis gas 发明人:WHYMAN ROBIN 权利人:ICI LTD 摘要:A process for the production of ethylene glycol, methanol, ethanol and/or esters thereof from mixtures of carbon monoxide and hydrogen (synthesis gas) which comprises contacting a mixture of carbon monoxide and hydrogen with a catalyst at elevated pressure in a liquid medium, said catalyst comprising ruthenium and at least one other metal from Group VIII of the Periodic Table, and wherein the molar proportion of ruthenium is at least 50 percent relative to the other Group VIII metals. The process is particularly applicable to the selective production of ethylene glycol. The preferred catalysts, which comprise ruthenium/rhodium, may be present in elemental form, as coordination compounds or salts, e.g. carbonyls, acetyl acetonates or carboxylates. It is especially preferred to use a co-catalyst comprising a compound of one or more the metals of Groups IA, IIA or IIB or a nitrogen containing cation and/or base. Suitable liquid media include carboxylic acids (e.g. acetic acid) and ethers (e.g. tetraglyme).
专利号:US-7385064-B1 优先权日:2005-11-30 标题 :Catalysts for use in enantioselective synthesis 发明人:DAVIES HUW M L; REDDY RAVISEKHARA P 权利人:UNIV NEW YORK STATE RES FOUND 摘要:Disclosed are compounds having the following formula: n nin which Z 11 is selected from a substituted or unsubstituted saturated adamantyl or other polycyclic group and a substituted or unsubstituted branched acyclic group containing at least 5 carbon atoms at least one of which is a tertiary carbon; and in which Z 12 is a cyclic imide. Methods of using these compounds as chiral catalysts for carbenoid reactions and for enantioselective C—H aminations are also described.
参考标题:Catalytic Enantioselective Synthesis Of Highly Functionalized Difluoromethylated Cyclopropanes 作者:Maxence Bos,Wei-Sheng Huang,Thomas Poisson,Xavier Pannecoucke,André B. Charette,Philippe Jubault |发布日期:2017.10.16 摘要:The First Catalytic Asymmetric Synthesis Of Highly Functionalized Difluoromethylated Cyclopropanes Is Described. The Method, Based On A Rhodium‐catalyzed Cyclopropanation Of Difluoromethylated Olefins, Gives Access To A Broad Range Of Cyclopropanes Bearing Ester, Ketone, Or Nitro Functional Groups. By Using Rh2((S)‐btpcp)4 As A Catalyst, The Corresponding Products Were Obtained In High Yields And High