氯代环己烷置于magnesium,三氯化磷体系中,用 乙醚 用作溶剂,化学反应 2.5H,反应生成二环己基氯化膦 参考文献:立体拥挤的二膦甲烷配体:T Bu 2 Pch 2 P T Bu 2及其相关物种的分子结构,紫外光电子能谱和常规合成 标题:立体拥挤的二膦甲烷配体:T Bu 2 Pch 2 P T Bu 2及其相关物种的分子结构,紫外光电子能谱和常规合成 摘要:一系列的高度拥挤对称和不对称diphosphinomethanes-[r 2 Pch 2 Pr' 2,重要配体在过渡金属化学和催化方面,即t Bu 2 Pch 2 P T Bu 2 (dtbpm,1),Cy 2 Pch 2 Pcy 2 (dcpm,2),T Bu 2 Pch 2 Pcy 2 (ctbpm,3),T Bu 2 Pch 2 P I Pr 2 (iptbpm,4)和t Bu 2 Pch 2 Pph 2 (ptbpm,5),已使用一般便捷的路线以高收率制备,详细说明请参见1.除4是无色液体外,这些化合物在室温下为结晶固体.它们的分子结构已经通过单晶x射线衍射以及更高的同系物1,T Bu 2 Ch 2 Ch 2 T Bu 2 (dtbpe,6)进行了测定.的氧化钛的固态结构1,吨卜2 P(o)ch 2 P(o)吨卜2 (7),和两个phospho阳离子衍生自1的质子化[ T Bu Doi:10.1039/b210114A
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.
专利号:US-3720736-A 优先权日:1970-03-17 标 题 :Process for the synthesis of dihydrocarbonphosphinates 发明人:QUICK J; VENEZKY D 权利人:US NAVY 摘要:A PROCESS FOR THE SYNTHESIS OF A DIHYDROCARBONPHOSPHINATE WHEREIN A DIHYDROCARBONAHALOPHOSPHINE IS OXIDIZED IN THE PRESENCE OF A DIHYDROCARBON SULFOXIDE, SUCH AS DIMETHYLSULFOXIDE, AND THE REACTION MIXTURE THEREOF IS REACTED WITH AN APPROPRIATE ALCOHOL TO FORM THE DESIRED ESTER.
专利号:US-9518014-B2 优先权日:2012-07-20 标 题:Process for synthesis of ezetimibe and intermediates used in said process 发明人:DING KUILING; WANG XIAOMING; WANG ZHENG 权利人:SHANGHAI INST ORGANIC CHEMISTRY CAS 摘要:A process for the production of ezetimibe and intermediates used in said process are disclosed. A kind of Morita-Baylis-Hillman adduct can be altered to chiral carboxylic acid derivatives of β-arylamino α-methylene with high activity and selectivity by means of ally lamination reaction, and the above carboxylic acid derivatives of β-arylamino α-methylene can be altered to the chiral intermediates of ezetimibe by means of simple conversion and further synthesized into the chiral drug ezetimibe. The synthesis route introduces chirality through the use of a chiral catalysis method, thereby avoiding the use of the chiral auxiliary oxazolidinone; and the route is economical and eco-friendly.
专利号:WO-2025158296-A1 优先权日:2024-01-22 标 题:Synthesis of phosphine ligands 发明人:CROCKETT MICHAEL; DAVIES IAN; DURAK LANDON; LEAHY DAVID; RUSSELL GRACE; SHEERAN JILLIAN 权利人:BIOHAVEN THERAPEUTICS LTD 摘要:A process of manufacturing a compound of Formula (I) includes: reacting an aryl bromide of Formula (III) with an aryl tert-butyl ether of Formula (IV) in the presence of an organolithium agent to provide a biaryllithium compound of Formula (II); and reacting the biaryllithium compound with chlorodicyclohexylphosphine, (I) (III) (IV) (II), wherein R1 is hydrogen or a C1-5 alkyl; R2 is isopropyl (iPr); R3 is hydrogen or a C1-5 alkoxy; and Cy is cyclohexyl.
专利号:US-12291489-B2 优先权日:2016-07-01 标 题 :Synthesis of nanocomposites and their use in enhancing plant nutrition 发明人:BISWAS PRATIM; RALIYA RAMESH 权利人:BISWAS PRATIM; RALIYA RAMESH; WASHINGTON UNIVERSITY ST LOUIS 摘要:The present disclosure is related to the development of improved fertilizer for precision and sustainable agriculture. A method was developed wherein efficient NPK nanocomposite for plant nutrition was synthesized in a single step using aerosol science and technology concepts. Further a formulation was prepared by addition of ZnO, TiO 2 and other nanoparticles to the NPK nanocomposite. Also, an aerosol based foliar application technique was developed for the precise delivery of nanoparticles to the plants.
专利号:US-2012309997-A1 优先权日:2010-02-12 标 题:Enantiomerically Enriched Aminodiphosphines as Ligands for the Preparation of Catalysts for Asymmetric Synthesis 发明人:ALONSO XALMA MONICA; VERDAGUER ESPAULELLA XAVIER; REVES VILAPLANA MARC; RIERA ESCALE ANTONI 权利人:ALONSO XALMA MONICA; VERDAGUER ESPAULELLA XAVIER; REVES VILAPLANA MARC; RIERA ESCALE ANTONI; ENANTIA S L 摘要:The present invention relates to enantiomerically enriched aminodiphosphine ligands where the chirality is located in the phosphorus atom and their preparation process, to catalysts containing them and their preparation process, as well as their use in asymmetric synthesis.