CAS: 24057-28-1; Pyridin-1-Ium 4-Methylbenzenesulfonate

相似化合物

93471-41-1 91944-64-8 82228-89-5

上下游产品

CAS号110-86-1 吡啶 | CAS号104-15-4 对甲苯磺酸 | CAS号80-48-8 对甲苯磺酸甲酯 | CAS号106050-81-1 1,3-苯并恶唑-6-醇 | CAS号2069-36-5 2,3,4,5,6-Penta... | CAS号74421-02-6 2-癸基吡啶 | CAS号1815-99-2 4-癸基吡啶 | CAS号36603-49-3 2-(4-溴苯氧基)四氢-2H-吡喃 | CAS号2668-74-8 17-乙酰氧基孕-1,4-二烯... | CAS号57323-06-5 顺-4-(四氢吡喃-2-氧)-... | CAS号73204-07-6 4-(4-氧代环己基)-苄腈 | CAS号72041-59-9 4-四氢吡喃氧基-2-羟基苯甲醛 | CAS号68-34-8 对甲苯磺酰苯胺

吡啶,对甲苯磺酸 以 乙酸乙酯 用作溶剂,化学反应 4.0H,反应生成4-甲基苯磺酸吡啶
参考文献:通过交替的环化-解聚整合升级和闭环回收
标题:通过交替的环化-解聚整合升级和闭环回收
摘要:目前,为解决报废塑料问题,科研人员正在紧急寻找有助于升级循环和闭环回收的下一代聚合物和技术.在这篇手稿中,开发了一种替代的环化-解聚策略,用于整合聚对二恶烷酮 (Ppdo) 的升级和闭环回收,Ppdo 是一种具有优异生物相容性,生物降解性和机械性能的脂肪族聚酯.以brønsted酸性离子液体用作溶剂/催化剂双功能剂,在较低温度下实现了线性ppdo( L-Ppdo)的解聚和环化.因此,受益于完全抑制的副反应,环状 Ppdo ( C在这样的条件下得到较高产率的-Ppdo),并且可以容易地与其他可蒸馏产物(主要是pdo单体)分离.在多循环的环化-解聚实验中,C-Ppdo被积累,其产量达到222 G L-1,与最先进的大环聚合物合成方法所获得的产量相当.一方面,升级循环产物c-Ppdo 可以通过水解转化回线性类似物,因此可再次用于闭环回收.另一方面,另一种回收产物,即纯度很高的pdo单体
Doi:10.1039/d2Gc00853J

专利信息

专利号:US-9920084-B2
优先权日:2011-08-23
标题 :Ionic tags for synthesis of oligoribonucleotides
发明人：DAMHA MASAD J; HASSLER MATTHEW; CHAN TAK-HANG; NANDYALA MALLIKARJUNA REDDY; DONGA ROBERT ALEXANDER
权利人:DAMHA MASAD J; HASSLER MATTHEW; CHAN TAK HANG; NANDYALA MALLIKARJUNA REDDY; DONGA ROBERT ALEXANDER; THE ROYAL INSTITUTION FOR THE ADVANCEMENT OF LEARNING/MCGILL UNIV; HONG KONG POLYTECHNIC UNIV
摘要:The invention relates to the chemical synthesis of oligonucleotides, e.g., oligoribonucleotides. In another aspect, the invention relates to compounds of formula (II) processes for making these compounds, and the use thereof in the chemical synthesis of oligonucleotides, e.g., oligoribonucleotides. The invention also relates to methods of synthesis of oligomers, including but not limited to oligopeptides, oligosaccharides and oligonucleotides, particularly oligoribonucleotides and also oligodeoxyribonucleotides, in solution systems, and ionic tag linkers for use in methods provided herein.

专利号:US-5849936-A
优先权日:1995-03-15
标题:Method for the synthesis of bis-tetrahydrofuranyl annonaceous acetogenins
发明人：HOYE THOMAS R; TAN LUSHI
权利人:UNIVERISTY OF MINNESOTA
摘要:A method for the synthesis of bis-tetrahydrofranyl Annonaceous acetogenins, including the natural products and analogs thereof, is provided which proceeds by the Pd-mediated coupling of a bis-tetrahydrofuranyl-subunit comprising a terminal alkyne, with a (C4)-hydroxybutenolide subunit comprising a terminal vinyl iodide, followed by selective reduction of the resulting enyne.

专利号:US-2024294462-A1
优先权日:2023-02-15
标题:Method for the Synthesis of Ionizable Lipids Using a Doubly Alkylated Intermediate
发明人：SAADATI FARIBA; TRAN HUY; CIUFOLINI MARCO; ATMURI N D PRASAD
权利人:NANOVATION THERAPEUTICS INC
摘要:Provided herein is a method for the preparation of ionizable, cationic amino lipids using a doubly alkylated nucleophilic intermediate to produce a ketone. The ketone, or a corresponding alcohol, is subjected to one or more synthesis steps to add an ionizable moiety thereto. The method can be advantageously employed for the synthesis of unsymmetrical analogues of the above lipids that would be considerably more difficult to make by alternative strategies. The method can also be used to prepare symmetrical ionizable, cationic amino lipids with fewer steps and/or with the use of fewer hazardous chemicals than known synthesis methods.

专利号:US-2008032964-A1
优先权日:2006-04-10
标题:Process for the synthesis of azetidinone
发明人：KANSAL VINOD K; AHMAD SUHAIL; MARIAPPAN SHANMUGAVEL; TYAGI BHUPENDRA; PERLMAN NURIT; LE PAIH JACQUES; ZANOTTI-GEROSA ANTONIO
权利人:KANSAL VINOD K; AHMAD SUHAIL; MARIAPPAN SHANMUGAVEL; TYAGI BHUPENDRA; PERLMAN NURIT; LE PAIH JACQUES; ZANOTTI-GEROSA ANTONIO
摘要:Provided are intermediates useful for the synthesis of hydroxyl-alkyl substituted azetidinones, processes of their preparation, and processes for the synthesis of certain hydroxyl-alkyl substituted azetidinones. Also provided are processes for the synthesis of 1-(4-fluorophenyl)-3(R)-[3-(4-fluorophenyl)-3(S)-hydroxypropyl]-4(S)-(4-hydroxyphenyl)-2-azetidinone, or ezetimibe.

专利号:US-2004018598-A1
优先权日:2000-05-30
标题 :Bio-intermediates for use in the chemical synthesis of polyketides
发明人：SANTI DANIEL; ASHLEY GARY; MYLES DAVID C
摘要:The present invention relates to compounds made by a subset of modules from one or more polyketide synthase (“PKSâ€?) genes that are used as starting material in the chemical synthesis of novel molecules, particularly naturally occurring polyketides or derivatives thereof. The biologically derived intermediates (“bio-intermediatesâ€?) generally represent particularly difficult compounds to synthesize using traditional chemical approaches due to one or more stereocenters. In one aspect of the invention, an intermediate in the synthesis of epothilone is provided that feeds into the synthetic protocol of Danishefsky and co-workers. In another aspect of the invention, intermediates in the synthesis of discodermolide are provided that feed into the synthetic protocol of Smith and co-workers. By taking advantage of the inherent stereochemical specificity of biological processes, the syntheses of key intermediates and thus the overall syntheses of compounds like epothilone and discodermolide are greaty simplified.

专利号:US-2012165520-A1
优先权日:2010-12-23
标题:Process for the synthesis of prodrugs of opioids
发明人：MCGEE PAUL; GARNETT IAN; JUAN E; MANAGE A; CARNIAUX JEAN-FRANCOIS
权利人:MCGEE PAUL; GARNETT IAN; JUAN E; MANAGE A; CARNIAUX JEAN-FRANCOIS
摘要:The present invention provides a process for the synthesis of opioid prodrugs. In particular, the present invention provides a process for the synthesis of opioid prodrugs comprising: treating an opioid, in the form of a salt or a freebase, with a carbonyl synthon to form an activated intermediate and subsequently reacting the activated intermediate with an amine, in the form of a salt or a freebase.