专利号:US-2003162992-A1 优先权日:2001-12-14 标 题 :Preparation of intermediates useful in the synthesis of antiviral nucleosides 发明人:WATANABE KYOICHI A; DU JINFA 摘要:The present invention is an efficient process for the manufacture of α-acyloxyacetaldehyde, a key intermediate in the synthesis of 1,3-oxathiolane and 1,3-dioxolane nucleosides.
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-7250510-B2 优先权日:2005-08-24 标 题:Transition metal complexes of N-heterocyclic carbenes, method of preparation and use in transition metal catalyzed organic transformations 发明人:ORGAN MICHAEL G; O'BRIEN CHRISTOPHER J; KANTCHEV ASSAM ERIC B 权利人:TOTAL SYNTHESIS LTD 摘要:The present invention relates to catalysts of transition metal complexes of N-heterocyclic carbenes, their methods of preparation and their use in chemical synthesis. The synthesis, ease-of-use, and activity of the compounds of the present invention are substantial improvements over in situ catalyst generation. Further, the transition metal complexes of N-heterocyclic carbenes of the present invention may be used as precatalysts in metal-catalyzed cross-coupling reactions.
专利号:US-5304647-A 优先权日:1988-02-09 标题:Method of preparation of halogenated diazines 发明人:STREKOWSKI LUCJAN; MOKROSZ MARIA; HARDEN DONALD B 权利人:UNIV GEORGIA STATE 摘要:A method of preparation of substituted halogenodiazines which are useful as intermediates in the synthesis of novel unfused heterobicyclic compounds, and the products thereof. The reaction consists of the addition of an organolithium reagent with subsequent dehydrogenation of the addition product. The reaction takes place in one reaction vessel, without isolation of the substituted halogenodihydrodiazine intermediate. The reactions proceed at moderate temperature and in a short amount of time, which decreases the probability of side reactions and increases yield. Furthermore, the workup step is conducted under two-phase conditions to prevent hydrolysis of the substituted halogenodiazine to a substituted hydroxydiazine. The method is easy, efficient and results in a high yield of product. The substituted halogenodiazines are used as intermediates in the synthesis of unfused heterobicyclic compounds containing an aromatic moiety, diazine, and another aromatic moiety, such as thiophene, benzene, or naphthalene, which have biological activity.
专利号:US-10940467-B2 优先权日:2014-01-27 标 题 :Synthesis of molecular sieves having MWW framework structure 发明人:JOHNSON IVY D; HRYCENKO NADYA A 权利人:EXXONMOBIL CHEMICAL PATENTS INC 摘要:The present invention provides an improved method for making molecular sieves having MWW framework structure using precipitated aluminosilicates (PAS), and the use of molecular sieves so made in processes for catalytic conversion of hydrocarbon compounds.
专利号:US-2002058286-A1 优先权日:1999-02-24 标 题 :Synthesis of epothilones, intermediates thereto and analogues thereof 发明人:DANISHEFSKY SAMUEL J; STACHEL SHAWN J; LEE CHUL BOM; CHAPPELL MARK D; CHOU TING-CHAO; WU ZHICAI 摘要:The present invention provides convergent processes for preparing epothilones, desoxyepothilones, and analogues thereof. The present invention further provides novel compositions and methods for the treatment of cancer and additionally provides methods for the treatment of cancer which has developed a multi-drug phenotype.
摘要:Shinmyozu, T.; Shibahara, M., Science of Synthesis, (2010) 45, 1290. 摘要:Kantchev, E. A. B.; Organ, M. G., Science of Synthesis, (2009) 48, 63. 摘要:Wicha, J., Science of Synthesis, (2009) 48, 170. 摘要:Kantchev, E. A. B.; Organ, M. G., Science of Synthesis, (2009) 48, 51. 摘要:Kantchev, E. A. B.; Organ, M. G., Science of Synthesis, (2009) 48, 38.