专利号:US-4158673-A 优先权日:1976-10-11 标 题 :Process for the synthesis of bis(alkyl sulphide)-decaborane (12) 发明人:DAZORD JACQUES L; MONGEOT HENRI M; GUILLEVIC GILDAS J; CUEILLERON JEAN F 权利人:FRANCE ETAT 摘要:The invention relates to a process for the synthesis of bis(alkyl sulphide)-decaboranes (12). n This synthesis is characterized in that a decahydrodecaborate (2-) salt of the general formula M 2 B 10 H 10 , in which M represents a positive radical, is treated with a mixture comprising a strong oxygen-containing acid and an alkyl sulphide of the formula R 2 S, in which R is a lower alkyl radical. In a preferred procedure, the said mixture is a solution of a strong oxygen-containing acid which is saturated with an alkyl sulphide. n The bis(alkyl sulphide)-decaboranes (12) are especially useful in the synthesis of certain carboranes.
专利号:US-2024309024-A1 优先权日:2023-03-14 标题 :Direct synthesis of alkenylhalosilanes 发明人:LEWIS KENRICK MARTIN; ZHU YANJUN; BYRNE CHRISTOPHER M 权利人:MOMENTIVE PERFORMANCE MAT INC 摘要:A process for the direct synthesis of alkenylhalosilane monomers. Forming a slurry of liquid and copper-activated silicon from fresh silicon, cyclone fines and/or fine dust from silicon grinding, ultrafines and/or spent contact mass from the Direct Synthesis of alkylhalosilanes and arylhalosilanes, in a thermally stable solvent. Reacting the silanes by agitating the slurry with at least one unsaturated aliphatic or cycloaliphatic organohalide of the formula R1X, and optionally an organohalosilane and/or hydrogen halide, in the presence of a polymerization inhibiting Lewis base additive, at a reaction time, temperature and pressure effective to produce alkenylhalosilanes having the formulae, R1SiHX2, R12SiHX, R13SiX, R1SiX3, and R12SiX2 or mixtures thereof.
专利号:US-10711138-B2 优先权日:2016-04-08 标题:Intermediates and procedures for the synthesis of functional materials 发明人:KIRSCH PEER; GUNST SUSANN 权利人:MERCK PATENT GMBH 摘要:The present invention relates to heteroaromatic compounds which have two different reactive groups, their use in the synthesis of asymmetrically substituted compounds, and synthesis processes in which the compounds according to the invention are reacted sequentially with two different compounds, whereby an asymmetrically substituted compound is formed.
专利号:WO-2013057134-A1 优先权日:2011-10-19 标 题:Synthesis of semiconductor nanoparticles using metal precursors comprising non- or weakly coordinating anions 发明人:BAHNMUELLER STEFAN; TIAN SUSAN; TIAN SHIZHE; HOHEISEL WERNER 权利人:BAYER IP GMBH; BAYER SOUTH EAST ASIA PTE LTD 摘要:The present invention relates to a method for the synthesis of semiconductor nanoparticles comprising elements of the groups IB, IIB, IIIA, IVA, VA or VIA of the periodic classification wherein the composition of the core nanoparticle is selected from the group consisting of IB-VIA, IIB-VIA, IIIA-VIA, IB-IIIA-VIA or IB-IIB-TVA-VIA, IIB-IIIA-VIA, IIB-TVA-VA or mixtures thereof, and at least one shell comprises elements of the groups IIB and VIA,, wherein in case the core composition is IIB-VIA the shell comprises at least a further element selected from the groups IB, IIIA, IVA or VA, using metal precursors comprising non- or weakly coordinating anions. It further relates to the consecutive process for the synthesis that includes first the preparation of a binary nanoparticle system then modified to make a ternary system which again can be further modified to make a quaternary system.
专利号:US-9790425-B2 优先权日:2014-04-18 标 题:Synthesis of quantum dots 发明人:MCDANIEL HUNTER 权利人:LOS ALAMOS NAT SECURITY LLC 摘要:Common approaches to synthesizing alloyed quantum dots employ high-cost, air-sensitive phosphine complexes as the selenium precursor. Disclosed quantum dot synthesis embodiments avoid these hazardous and air-sensitive selenium precursors. Certain embodiments utilize a combination comprising a thiol and an amine that together reduce and complex the elemental selenium to form a highly reactive selenium precursor at room temperature. The same combination of thiol and amine acts as the reaction solvent, stabilizing ligand, and sulfur source in the synthesis of quantum dot cores. A non-injection approach may also be used. The optical properties of the quantum dots synthesized by this new approach can be finely tuned for a variety of applications by controlling size and/or composition of size and composition. Further, using the same approach, a shell can be grown around a quantum dot core that improves stability, luminescence efficiency, and may reduce toxicity.
专利号:US-10730904-B2 优先权日:2012-11-14 标 题:Method for liquid-phase synthesis of nucleic acid 发明人:NONOGAWA MITSURU; NAGATA TOSHIAKI; SAITO HIDEKI; YASUMA TSUNEO 权利人:TAKEDA PHARMACEUTICALS CO 摘要:In this method, an oligonucleotide represented by formula (II) [wherein Y 1 , Q, Base, r and r′ are each as defined in claim 1 ] is prepared by using, as a synthesis unit, a novel nucleoside monomer compound represented by formula (I) [wherein X, R 1 , Y, Base, Z, Ar, R 2 , R 3 and n are each as defined in claim 1 ]. The novel nucleoside monomer compound is a nucleoside, the base moiety of which is substituted with an aromatic-hydrocarbon-ring-carbonyl or -thiocarbonyl group having at least one hydrophobic group. The method can dispense with column-chromatographic purification in every reaction, and enables base elongation not only in the 3′-direction but also in the 5′-direction, thus attaining efficient liquid-phase mass synthesis of an oligonucleotide.
参考标题:Catalyst-Controlled Regiodivergent Synthesis Of 1- And 3-Thiosugars With High Stereoselectivity And Chemoselectivity 作者:Yuexin Liu,Yang Jiao,Huajun Luo,Nianyu Huang,Mengnan Lai,Kun Zou,Hui Yao |发布日期:2021.5.7 摘要:An Effective Regiodivergent Synthesis Toward 1- And 3-Thiosugars Was Achieved Through Palladium And Cobalt Catalysis, Respectively. β-1-Thiosugars Were Obtained From 3,4-O-Carbonate-Glycals And Various Thiols Catalyzed By Pd2(Dba)3 In Good Yields With Exclusive Stereoselectivity And Chemoselectivity, While Only (3S)-3-Thiosugars Were Generated Via Co(Bf4)2. Experiments And Dft Calculations Supported
合成参考文献
摘要:Chciuk, T. V.; Flowers, R. A.; Flowers, R. A., Science of Synthesis Knowledge Updates, (2016) 2, 220. 摘要:Rodríguez-Morgade, M. S.; Torres, T., Science of Synthesis Knowledge Updates, (2017) 2, 69. 摘要:Zimmer, R.; Trawny, D., Science of Synthesis Knowledge Updates, (2013) 4, 204. 摘要:Podlech, J., Science of Synthesis Knowledge Updates, (2018) 4, 178. 摘要:Beier, P., Science of Synthesis Knowledge Updates, (2014) 2, 315.