CAS: 40949-94-8; Hexamethyldisilazane Potassium Salt

上下游产品

tetrakis(trimethylsilyl)tetrazene 1,1,1,3,3,3-hexamethyl-disilazane hexamethyldisilazan lithium bis(trimethylsilyl)amide diethyl etherate1,1,1,3,3,3-hexamethyl-disilazane N'-isopropyl-1,1-dimethyl-N,N-bis(trimethylsilyl)silanediamine 2,4-diisopropyl-1,1,3,3-tetramethylcyclodisilazane Potassium; 2,3,4-trimethyl-naphthalen-1-olate

Lithium Bis(Trimethylsilyl)Amide Diethyl Etherate置于potassium Tert-Butylate体系中,用 苯 作为反应溶剂,以79%的收率获得产物双(三甲基硅烷基)氨基钾
参考文献:β-氧代-δ-二亚胺镍络合物:乙烯聚合催化中互变异构活性物质的比较
标题:β-氧代-δ-二亚胺镍络合物:乙烯聚合催化中互变异构活性物质的比较
摘要:报道了一系列β-氧代-δ-二亚胺(boddi)配体的单金属和双金属镍烷基配合物.单金属配合物具有第二个结合袋,其中的游离"臂"可以作为烯胺(例如,8,Bodei,β-氧代-δ-烯胺亚胺)或亚胺(例如,3,Bodii,β-氧代-δ-亚胺亚氨基)互变异构体.二级 Ni 配位球中互变异构体的特性对乙烯聚合行为有显着影响:与中心 O 原子氢键并与 N,O 骨架螯合物共轭的烯胺互变异构体明显更富电子,并且产生比亚胺互变异构体低得多的分子量聚合物,亚胺互变异构体从ni旋转到远端位置并且对聚合几乎没有影响.用 M(Hmds) 对第二个结合口袋进行去质子化 (M = Li,Na,K) 产生 Ni-碱金属异双金属配合物 3Li,3Na 和 3K.去质子化的碱金属烯酰胺表现出与中性亚胺复合物相似的乙烯聚合行为...
DOI:10.1021/acs.Organomet.6B00256

专利信息

专利号:US-11548898-B2
优先权日:2017-07-06
标题 :Synthesis of halichondrins
发明人：KISHI YOSHITO; AI YANRAN; YE NING; WANG QIAOYI; YAHATA KENZO; ISO Kentaro; NAINI SANTHOSH REDDY; YAMASHITA SHUJI; LEE JIHOON; OHASHI ISAO; FUKUYAMA TAKASHI
权利人:HARVARD COLLEGE; EISAI R&D MAN CO LTD
摘要:The present invention provides methods for the synthesis of ketones involving a Ni/Zr-mediated coupling reaction. The Ni/Zr-mediated ketolization reactions can be used in the synthesis of halichondrins (e.g., halichondrin A, B, C; homohalichondrin A, B, C; norhalichondrin A, B, C), and analogs thereof. Therefore, the present invention also provides synthetic methods useful for the synthesis of halichondrins, and analogs thereof. Also provided herein are compounds (i.e., intermediates) useful in the synthesis of halichondrins, and analogs thereof. In particular, the present invention provides methods and compounds useful in the synthesis of compound of Formula (H3-A).

专利号:WO-9837078-A1
优先权日:1997-02-20
标题 :Solid phase and combinatorial synthesis of substituted thiophenes and of arrays of substituted thiophenes
发明人：DOERWALD FLORENCIO ZARAGOZA
权利人:NOVO NORDISK AS
摘要:A solid phase method for the synthesis of a plurality of differently substituted thiophenes with a wide variety of side-chain substituents as compounds of potential therapeutic interest. The thiophenes are prepared by reaction of a substrate-bound primary or secondary amine with a thiophosgene equivalent and reaction of the resulting intermediate with an acceptor-substituted acetonitrile in the presence of a base. Alkylation with an appropriate alkyl halide, followed by Thorpe-Ziegler-cyclization yields differently substituted, support-bound 3-aminothiophenes. These may be screened on the substrate or cleaved from the substrate and then screened in solution. Alternatively, the resin-bound 3-amino thiophenes or the synthetic intermediates can be subjected to further synthetic transformations (N-acylation, reduction) on the support, which permits the preparation of further therapeutically interesting compounds. The efficient synthesis of a wide variety of thiophenes using automated synthesis technology of the present method makes these compounds attractive candidates for the generation and rapid screening of diverse thiophene-based libraries. The method disclosed here provides an easy and fast access to highly diverse heterocyclic compounds of therapeutic interest, amenable to automatization.

专利号:US-6136984-A
优先权日:1996-04-22
标 题 :Solid phase and combinatorial synthesis of substituted thiophenes and of arrays of substituted thiophenes
发明人：DOERWALD FLORENCIO ZARAGOZA
权利人:NOVO NORDISK AS
摘要:A solid phase method for the synthesis of a plurality of differently substituted thiophenes with a wide variety of side-chain substituents as compounds of potential therapeutic interest is disclosed. The thiophenes are prepared by acylation of a substrate-bound primary or secondary amine with cyanoacetic acid and reaction of the resulting cyanoacetamide with an isothiocyanate in the presence of a base. Alkylation with an appropriate alkyl halide, followed by Thorpe-Ziegier-cyclization yields differently substituted, support-bound 3-aminothiophenes. These may be screened on the substrate or cleaved from the substrate and then screened in solution. Alternatively, the resin-bound 3-amino thiophenes or the synthetic intermediates can be subjected to further synthetic transformations (N-acylation, reduction) on the support, which permits the preparation of further therapeutically interesting compounds. The efficient synthesis of a wide variety of thiophenes using automated synthesis technology of the present method makes these compounds attractive candidates for the generation and rapid screening of diverse thiophene-based libraries. The method disclosed here provides an easy and fast access to highly diverse heterocyclic compounds of therapeutic interest, amenable to automatization.

专利号:WO-0027627-A1
优先权日:1998-11-12
标题 :Aryloxime linkers in the solid-phase synthesis of 3-aminobenzisoxazoles
发明人：WILEY MICHAEL ROBERT; LEPORE SALVATORE DONATO
权利人:LILLY CO ELI; WILEY MICHAEL ROBERT; LEPORE SALVATORE DONATO
摘要:In its first aspect, the invention is directed to a solid support mediated method for the synthesis of diverse polycyclic heterocycles according to general formula (V). A second aspect of the invention is directed to a solid support bound intermediate compound that optionally can be derivatized before a cyclization and displacement procedure provides a product. The intermediate is preferably stable to a wide range of chemical conditions thus allowing, if desired, for the chemical derivatization of the intermediate. A third aspect of the invention is directed to a library of polycyclic heterocycle compounds where said library contains a plurality of diverse library compounds of general formula (V). A fourth aspect of the invention is directed to a method for the synthesis of a library of diverse polycyclic heterocycles by the general method described. A fifth aspect of the invention is directed to an assay kit for the identification of lead compounds of the library described therein.

专利号:US-5442065-A
优先权日:1993-09-09
标 题:Synthesis of tetrahydroquinoline enediyne core analogs of dynemicin
发明人：MAGNUS PHILIP D; ILIADIS THEODORE; EISENBEIS SHANE A; FAIRHURST ROBIN A
权利人:UNIV TEXAS
摘要:A process is described for the preparation of the core azobicyclo[7.3.1]tridecaenediyne moiety of the antitumor antibiotic dynemicin. The synthesis allows efficient production of the enediyne as a stable, compound in good yield from the adamantyl N-protected azabicyclo[7.3.1]tridecadiyne. The adamantyl protecting group is employed in the starting material, N-adamantyl dihydroquinoline or N-adamantyl 6-methoxy quinoline. Also disclosed are process for the synthesis of 3-hydroxy-6-methoxyquinoline and several N-substituted derivatives of azobicyclo[7.3.1]tridecaenediyne. Solid tumor and leukemia assays were performed on the analogs of dynemicin. The results suggest a method that these compounds will useful in treating certain types of leukemias and solid tumors. The disclosed synthesis provides a route to new dynemicin intermediates and analogs which will allow development of second and third generation dynemicins.

专利号:US-8293930-B1
优先权日:2004-06-25
标题 :One pot synthesis of taxane derivatives and their conversion to paclitaxel and docetaxel
发明人：NAIDU RAGINA
权利人:NAIDU RAGINA; CHATHAM BIOTEC LTD
摘要:A process is provided for the semi-synthesis of taxane intermediates useful in the preparation of paclitaxel and docetaxel, in particular, the semi-synthesis of protected taxane intermediate in a one pot reaction of protecting the C-7 and C-10 positions and attaching a side chain at the C-13 position and subsequently deprotecting the group to form paclitaxel or docetaxel, and taxane intermediates.