CAS: 3277-26-7; 1,1,3,3-Tetramethyldisiloxane

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CAS号2401-73-2 1,3-二氯四甲基二硅氧烷 | CAS号78-10-4 正硅酸乙酯 | CAS号14857-34-2 二甲基乙氧基硅烷 | CAS号1066-35-9 二甲基一氯硅烷 | CAS号116417-16-4 (1R,2S,4S)-1-(d... | CAS号2441-21-6 iododimethylsilane | CAS号75-54-7 甲基二氯硅烷 | CAS号676-58-4 甲基氯化镁 | CAS号1438-82-0 五甲基二硅氧烷 | CAS号107-50-6 十四甲基环七硅氧烷 | CAS号556-67-2 八甲基环四硅氧烷 | CAS号541-02-6 环五聚二甲基硅氧烷 | CAS号540-97-6 十二甲基环六硅氧烷 | CAS号556-68-3 十六甲基环辛硅氧烷 | CAS号2441-21-6 iododimethylsilane | CAS号98-82-8 异丙基苯 | CAS号19095-23-9 1,1,3,3,5,5,7,7... | CAS号19095-24-0 1,1,3,3,5,5,7,7... | CAS号18405-83-9 1,1,3,3-tetrame...

1,3-二氯-1,1,3,3,-四甲基二硅氧烷 以91%的收率获得1,1,3,3-四甲基二硅氧烷
参考文献:Process For The Preparation Of 1,3-Dihalo-1,1,3,3-Tetra(Organyl) Disiloxanes
标题:Process For The Preparation Of 1,3-Dihalo-1,1,3,3-Tetra(Organyl) Disiloxanes
摘要:通式为xr2Si-o-sir2X (1)的1,3-二卤代-1,1,3,3-四(烷基)二硅氧烷可通过在过渡金属8族元素或这些过渡金属的化合物或配合物选择的催化剂存在下,将相应的通式为hr2Si-o-sir2H (2)的1,3-二氢代-1,1,3,3-四(烷基)二硅氧烷与氢卤酸反应制备,其中r为烷基或卤代烷基,X为卤素.

专利信息

专利号:US-7956011-B2
优先权日:2005-05-04
标题:Materials and methods for the photodirected synthesis of oligonucleotide arrays
发明人：SERAFINOWSKI PAWEL JERZY; GARLAND PETER BRYAN
权利人:CANCER RES INST ROYAL
摘要:Materials and methods for photodirected synthesis of oligonucleotide arrays on a solid substrate by photodirected synthesis are disclosed which employ a film formed from (i) a photoacid generator that on photolysis generates acid that is capable of directly removing the protecting group of the linker molecules or oligonucleotides and (ii) a polymer substantially lacking electronegative heteroatoms that are capable of hydrogen bonding with photogenerated acid. Methods of synthesizing an oligomer arrays are also described that use a film that restricts diffusion of reactants and products on the substrate during synthesis of the array and which includes a precursor of a deprotecting reagent. The method involves removing one or more of the non-required products of the deprotection reaction from the reactive array elements at which they are produced during the reaction, in order to displace the deprotection reaction towards completion.

专利号:US-9212118-B2
优先权日:2010-12-23
标题:Synthesis of intermediates for preparing anacetrapib and derivatives thereof
发明人：HUMLJAN JAN; MARAS NENAD
权利人:HUMLJAN JAN; MARAS NENAD; LEK PHARMACEUTICALS
摘要:The present invention relates to the field of organic chemistry, more specifically to the synthesis of intermediate compounds which can be used in the synthesis of pharmaceutically active agents such as anacetrapib or derivatives thereof.

专利号:US-6528642-B1
优先权日:1997-08-29
标题:Mono-and di-derivatives of cyclodextrins, synthesis thereof and purification and use thereof in support
发明人：DUVAL RAPHAEL; LEVEQUE HUBERT
权利人:INST FRANCAIS DU PETROLE; CHIRALSEP SARL
摘要:Mono- and di-derivatives of cyclodextrins are completely defined, also a method for their synthesis and purification, functionalised cyclodextrins obtained from these derivatives, and the synthesis of supports comprising these cyclodextrin derivatives. Use of the supports for the preparation or separation of enantiomers, for asymmetric synthesis, for catalysis, for the preparation or separation of geometrical isomers or positional isomers, or for the preparation or separation of organic molecules with a hydrophobic nature is also described.

专利号:US-2022064111-A1
优先权日:2019-01-17
标 题:Enantioselective synthesis of brivaracetam and intermediates thereof
发明人：ROY SARABINDU; GHOSH ANGSHUMAN; KUBEER RAMESH DHONDI; PRASAD MUTYALA V V VARA; PAUL GOPAL; GARAI ABHISHEK; CHAKRABORTY SOURAV; HALDAR ANIMESH; YADAW AJAY KUMAR; ROY SUBHO
权利人:CLININVENT RES PVT LTD
摘要:The present invention relates to an improved and economical process for enantioselective synthesis and purification of a novel key intermediate of Brivaracetam. Further, the present invention also relates to a process for the preparation of a chirally pure Brivaracetam of formula I utilizing the said intermediate.

专利号:WO-2024145422-A1
优先权日:2022-12-28
标题 :Synthesis of 2-phenyl-2-amino-cyclohexan-1-one derivatives
发明人：SENANAYAKE CHRIS; SIRASANI GOPAL; QU BO; SAMANKUMARA LALITH; NAINI SANTOSH; GAJULA PRAVEEN; GANGU SATYA; LEONG WILLIAM
权利人:GILGAMESH PHARMACEUTICALS INC
摘要:The present disclosure relates to a process for making a compound of the formula I and to the enantioselective synthesis to prepare the S or R isomers. It also relates to intermediates in the process.

专利号:US-7576169-B2
优先权日:2003-10-23
标 题:Facile synthesis of polyhedral silsesquioxane anions and use thereof
发明人：HASEGAWA ISAO; LAINE RICHARD M; ASUNCION MICHAEL Z; TAKAMURA NORIHIRO
权利人:UNIV MICHIGAN
摘要:Polyhedral silsesquioxane anions are economically prepared by reaction of a silica source derived from combusted organic material with a quaternary ammonium hydroxide compound. Reaction of the resulting anions with chlorosilanes may be effected in near stoichiometric fashion in organic solvent containing reactive quantities of organic acids such as formic acid. The functional groups on the resulting functionalized silsesquioxanes may be substituted for other functional groups by reaction with di- or polysiloxanes in the presence of a synthetic ion exchange resin.