CAS: 1450-14-2; Hexamethyldisilane

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CAS号75-77-4 三甲基氯硅烷 | CAS号2857-97-8 三甲基溴硅烷 | CAS号109-99-9 四氢呋喃 | CAS号4648-54-8 叠氮基三甲基硅烷 | CAS号13465-77-5 六氯乙硅烷 | CAS号544-97-8 二甲基锌 | CAS号7677-24-9 三甲基氰硅烷 | CAS号2700-22-3 苯亚甲基丙二腈 | CAS号75-76-3 四甲基硅烷 | CAS号105253-32-5 4-bicyclo[2.2.2... | CAS号1014-66-0 对三甲基硅氧基硝基苯 | CAS号1079-56-7 trimethyl-(2-ni... | CAS号5553-92-4 2-(4-甲氧基苄基)丙二腈 | CAS号36971-28-5 (3-溴苯氧基)三甲基硅烷 | CAS号3728-43-6 对甲苯三甲基硅烷 | CAS号613-33-2 4,4'-二甲基联苯 | CAS号108-88-3 甲苯 | CAS号770-09-2 苄基三甲基硅烷

叠氮基三甲基硅烷置于u[1,4,7-[3-(1-Ad)-5-(T-Bu)-2-O(1-)-Benzyl]3-1,4,7-Tacn]3,甲胩体系中,用 苯,正戊烷 用作溶剂,化学反应生成六甲基二硅烷
参考文献:由空间压力铀络合物介导的多键易位.
标题:由空间压力铀络合物介导的多键易位.
摘要:
Doi:10.1002/anie.200501667

专利信息

专利号:US-6376676-B1
优先权日:1993-06-30
标题 :Intermediates in the synthesis of (±)-camptothecin and related compounds and synthesis thereof
发明人：CURRAN DENNIS P; LIU HUI
权利人:UNIV PITTSBURGH
摘要:The present invention provides a short, convergent total synthesis of novel intermediates in the synthesis of (±)-camptothecin and related compounds. The present synthesis scheme includes a novel 4+1 radical annulation followed by another cyclization to simultaneously assemble rings B and C of the camptothecin compound. The present invention also provides novel chemical intermediates for such 4+1 radical annulations.

专利号:US-6252079-B1
优先权日:1993-06-30
标 题 :Intermediates in the synthesis of camptothecin and related compounds and synthesis thereof
发明人：CURRAN DENNIS P; BOM DAVID
权利人:UNIV PITTSBURGH
摘要:The present invention provides a short, convergent total synthesis of irinotecan and derivative compounds which comprises of a novel 4+1 radical annulation wherein the precursoris reacted with an aryl isonitrile having the formulawherein X is Br or I, and R4 is an alkyl group, an allyl group, a propargyl group or a benzyl group, and R16 is H, a C1-C6 alkoxy group, agroup wherein p is an integer between 4 and 12, or a C1-C12 acyclic dialkylamino group. The present invention also provides novel chemical intermediates for such 4+1 radical annulations.

专利号:US-2024269636-A1
优先权日:2021-06-14
标题:Ultra-high throughput on-chip synthesis of microgels with tunable mechanical properties
发明人：LEE DAEYEON; ISSADORE DAVID AARON; WU JINGYU; YADAVALI SAGAR PRASAD
权利人:UNIV PENNSYLVANIA
摘要:Hydrogel particles (microgels) generated using microfluidic methods have superb properties such as high size uniformity and precise control over degradation and release profiles, making them useful for applications in wound healing and injectable drug delivery. However, the throughput of microfluidics is constrained by the physics governing the flow of immiscible fluids confined within microchannels. This throughput tends to be several orders of magnitude lower than what would be necessary for commercial and clinical applications. Here, we demonstrate the scaling up of on-chip synthesis of microgels by parallelizing the microfluidic channels. Taking advantage of the established fabrication technologies developed by the semiconductor industry and a high flow control system, a 4-inch silicon microfluidic chip integrating more than 4,000 microfluidic devices is developed. By incorporating a high energy flood UV source, this chip allows the synthesis of poly (ethylene glycol) diacrylate microgel particles with diameter down to 30 m at a throughput above Ikg/hr. By using photomasks that enable milli-second scale control of the UV exposure, the stiffness of microgels can be varied.

专利号:US-2023287032-A1
优先权日:2020-08-14
标 题:Synthesis of fluorinated nucleotides
发明人：CHUNG CHEOL KEUN; LIU ZHIJIAN; MALIGRES PETER E; MAO EDNA; OBLIGACION JENNIFER V; PHILLIPS ERIC M; PIRNOT MICHAEL; POIRIER MARC; SONG ZHIGUO JAKE; WANG TAO
权利人:CHUNG CHEOL KEUN; LIU ZHIJIAN; MALIGRES PETER E; MAO EDNA; OBLIGACION JENNIFER V; PHILLIPS ERIC M; PIRNOT MICHAEL; POIRIER MARC; SONG ZHIGUO JAKE; WANG TAO; MERCK SHARP & DOHME LLC
摘要:The present invention relates to efficient processes useful in the preparation of fluorinated nucleosides, such as (O—{[(2R,3R,4S,5R)-5-(6-amino-9H-purin-9-yl)-4-fluoro-3-hydroxyoxolan-2-yl]methyl}O,O-dihydrogen phosphorothioate, also known as 2′-(S)-fluoro-thio-adenosine monophosphate or 2′-F-thio-AMP. Such fluorinated nucleosides may be useful as a biologically active compound and or as an intermediate for the synthesis of more complex biologically active compounds. The present invention also encompasses intermediates useful in the disclosed synthetic processes and the methods of their preparation.

专利号:US-6982333-B2
优先权日:1993-06-30
标 题:Intermediates in the synthesis of camptothecin and related compounds and synthesis thereof
发明人：CURRAN DENNIS P; JOSIEN HUBERT; KO SUNG BO
权利人:UNIV PITTSBURGH
摘要:The present invention provides a short, convergent total synthesis of camptothecin and related compounds which consists of a novel 4+1 radical annulation. The present invention also provides novel chemical intermediates for such 4+1 radical annulations.

专利号:US-8722886-B1
优先权日:2012-11-13
标题:Methods for the total chemical synthesis of enantiomerically-pure 7-(2′-trimethylsilyl)ethyl camptothecin
发明人：CHEN XINGHAI; HAUSHEER FREDERICK H; MALAKHOV ANDREY; KOCHAT HARRY
权利人:CHEN XINGHAI; HAUSHEER FREDERICK H; MALAKHOV ANDREY; KOCHAT HARRY; BIONUMERIK PHARMACEUTICALS INC
摘要:The present invention discloses and claims five (5) novel, highly efficient synthetic routes for the total synthesis of enantiomerically-pure (i.e., 99%) 7-(2′-trimethylsilyl)ethyl camptothecin (BNP1350; Karenitecin; Cositecan). These aforementioned synthetic schemes are the first to disclose the total syntheses of 7-(2′-trimethylsilyl)ethyl camptothecin using a highly novel direct, non-linear and convergent synthetic strategy which involves annealing the key C7-(trimethylsilyl)ethyl side chain-bearing A ring key synthons to an enantiomerically-pure tricyclic pyridone; rather than through the conventional methodology which incorporates the C7-(trimethylsilyl)ethyl side chain as the final synthetic step on a totally synthesized camptothecin parent compound. The current novel synthetic approaches reported herein since utilize desirably functionalized A-ring with preinstalled trimethyl silyl ethyl side chain, the aforementioned synthetic methodologies have a wider scope of making wide range of pharmaceutically relevant A-ring substituted BNP1350 analogs by substituting desirably functionalized nitro or protected amino phenyl carboxy A-ring as the starting material.