CAS: 628-13-7; Pyridinehydrochloride

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CAS号62147-49-3 1,3-二羟基丙酮二聚体 | CAS号112-13-0 癸酰氯 | CAS号17598-93-5 1,3-二癸酸甘油酯 | CAS号54562-14-0 Γ-亚油酰氯 | CAS号56-81-5 甘油 | CAS号112-77-6 油酰氯 | CAS号110-86-1 吡啶 | CAS号95058-77-8 2-脱氧-2,2-二氟-D-赤... | CAS号75-36-5 乙酰氯 | CAS号103-80-0 苯乙酰氯 | CAS号496-78-6 2,4,5-三甲基苯酚 | CAS号527-54-8 3,4,5-三甲基苯酚 | CAS号5957-90-4 2-(4-甲氧基苯基)吡啶 | CAS号5938-16-9 4-(4-甲氧基苯基)吡啶 | CAS号52780-23-1 5-chlorobenzene... | CAS号3228-99-7 四氯化五烯 | CAS号41438-18-0 2-甲基-4-羟基苯甲醛 | CAS号99-87-6 4-异丙基甲苯 | CAS号500-66-3 5-戊基间苯二酚 | CAS号533-73-3 1,2,4-苯三酚

吡啶置于hydrochloric Acid Diethyl Ether体系中,用 乙醚 作为反应溶剂,化学反应生成 吡啶盐酸盐
参考文献:Phicl2 被氯离子激活
标题:Phicl2 被氯离子激活
摘要:对吡啶在 Phicl 2苯甲醚亲电氯化中的潜在活化作用的研究发现,可溶性氯离子源在催化负载下活化反应中的 Phicl 2,大大提高了氯化速率.进一步表明,氯化物的存在增加了phicl 2分解成phi和cl 2的速率.氯化物引起亲电氯化和phicl 2分解的具体机制仍然是一个悬而未决的问题.
DOI:10.1039/d1Dt02565A

专利信息

专利号:WO-2021014395-A1
优先权日:2019-07-24
标题:Process for the synthesis of deuterated capsaicin, capsaicinoids and synthetic capsaicin analogs
发明人：ORUGANTI SRINIVAS; AMRUTAPU SRAVANTH KUMAR; SAMPATH MAGESH; SEN SAIKAT
权利人:DR REDDY’S INST OF LIFE SCIENCES
摘要:The present application provides novel processes for the synthesis of deuterated intermediates of capsaicinoids, particularly II, III, IV and V of capsaicinoids, relating to pharmaceutical applications. The invention also provides novel intermediates of compounds of formula IX, XIV, XV, XVI, XVII, XVIII, XX and XXI utilized in the process of making deuterated capsaicin II, III, IV and V.

专利号:WO-2025035571-A1
优先权日:2023-08-15
标 题 :Process for recycling waste residue from synthesis of hexachlorocyclotriphosphazene
发明人：LONG ZHI; WANG QIUWEI; LIN PING; YAN ZHIWEI; YE JUN
权利人:ZHEJIANG WANSHENG CO LTD
摘要:Provided is a process for recycling waste residue from the synthesis of hexachlorocyclotriphosphazene. The process comprises: reacting waste residue separated out after a synthesis reaction of hexachlorocyclotriphosphazene is finished with an ammonia source, the ammonia source being liquid ammonia, ammonia gas, ammonia water, ammonium bicarbonate, ammonium carbonate or a combination thereof; adjusting the pH value at an end point to 6-10; subjecting the obtained reaction product to solid-liquid separation so as to obtain a filtrate and a filter cake; subjecting the filter cake to post-treatment so as to obtain a recovered metal chloride catalyst; extracting the filtrate by using chlorobenzene, i.e. an extracting agent, so as to obtain an extract phase and a raffinate phase; rectifying the extract phase to obtain chlorobenzene and recovered pyridine or pyridine derivatives; and dehydrating the raffinate phase to obtain recovered ammonium chloride. By means of the process, high-degree recycling and regeneration of waste residue from the synthesis of hexachlorocyclotriphosphazene are achieved, the recovery rate of pyridine or pyridine derivatives from the waste residue can reach 95-99% or higher, the recovery rate of ammonium chloride and the metal chloride catalyst can reach 98% or higher, and no new waste residue is generated throughout the whole process.

专利号:US-6552213-B1
优先权日:2002-05-10
标 题:Stereoselective route to produce tris-O-substituted-(E)-1-(3,5-dihydroxyphenyl)-2-(4-hydroxyphenyl)ethene, an intermediate in the synthesis of trans-resveratrol
发明人：DESHPANDE PANDURANG BALWANT; SENTHILKUMAR UDAYAMPALAYAM PAL; ANDREW GNANAPRAKASAM
权利人:ORCHID CHEMICALS & PHARM LTD
摘要:The present invention relates to a new stereoselective method for the preparation of tris-O-substituted-(E)-1-(3,5-dihydroxyphenyl)-2-(4-hydroxyphenyl)ethene derivative of the formula (I) which is a key intermediate in the synthesis of trans-resveratrol (I, R2=R2=R3=H). The invention also provides a method for the exclusive synthesis of trans-isomer of compounds of formula (I) without any contamination of cis-isomer.

专利号:US-5204456-A
优先权日:1986-04-08
标题:Derivatives of nucleosides and their use for the synthesis of oligonucleotides
发明人：MOLKO DIDIER; SCHULHOF JEAN-CLAUDE; TEOULE ROBERT
权利人:COMMISSARIAT ENERGIE ATOMIQUE
摘要:The invention relates to derivatives of nucleosides and their use for the synthesis of oligonucleotides. These derivatives are in accordance with the formula: (I) in which B represents a radical derived from guanine, cytosine or adenine, whose exocylic NH group is protected by the group with R1 representing a hydrogen atom or a alkyl radical and R2 a hydrogen atom, and alkyl radical, an alkoxy radical and optionally substituted aryloxy radical, R3 represents a hydrogen atom, the dimethoxytrityl radical or the radical R4 represents a hydrogen atom, the radical of formula: or a radical suitable for the synthesis of polynucelotides and R5 represents a hydrogen atom or the protected or unprotected hydroxyl OH radical.

专利号:WO-2025035570-A1
优先权日:2023-08-15
标 题:Process for recovering pyridine or pyridine derivatives from waste residue produced during synthesis of hexachlorocyclotriphosphazene
发明人：LI XUFENG; LONG ZHI; WANG QIUWEI; Mou Yongchuan; JIN YITING
权利人:ZHEJIANG WANSHENG CO LTD
摘要:Disclosed in the present invention is a process for recovering pyridine or pyridine derivatives from waste residue produced during the synthesis of hexachlorocyclotriphosphazene. The process comprises: stirring and mixing waste residue separated after the completion of a hexachlorocyclotriphosphazene synthesis reaction with water at a mass ratio of 1:(0.5-2.5) to obtain a mixture, adding an alkali to the mixture to perform a neutralization reaction, controlling the reaction temperature to be 0-50ºC, and adjusting the pH value of an end point to 6-10, so as to obtain a neutralization solution; centrifuging or filtering the neutralization solution to separate out a filtrate, and extracting the filtrate by using chlorobenzene, so as to obtain an extract phase and a raffinate phase; and rectifying the extract phase, so as to obtain chlorobenzene and recovered pyridine or pyridine derivatives. In the present invention, sodium chloride generated by system neutralization can be fully utilized, introduction of an external salt is not needed, salting-out and extraction are successively achieved, and a salting-out water phase is directly returned and reused after extraction, thereby lowering the output of wastewater and energy consumption regarding reuse of wastewater, greatly reducing difficulties in extraction of pyridine or pyridine derivatives, decreasing the use amount of an extraction agent, and reducing the energy consumption of a rectification separation system.

专利号:US-11186678-B2
优先权日:2018-11-30
标 题 :Radical cascade-enabled synthesis of precision polymers with complex main-chain structures
发明人：NIU JIA; HUANG HANCHU; WANG WENQI
权利人:TRUSTEES BOSTON COLLEGE
摘要:Radical cascade reactions enabling sequence-controlled ring-closing polymerization and ring-opening polymerization for the controlled synthesis of polymers with complex main-chain structures are provided. Facile syntheses leading to low-strain macrocyclic monomers consisting of the ring-opening triggers and extended main-chain structures are also provided. The present disclosure further provides methods for excellent control over polymer molecular weights and molecular weight distributions and high chain-end fidelity allows for the preparation of polymeric systems with well-defined architectures. Further provided are the general nature of the radical cascade-triggered transformations in polymer chemistry, and its application to the synthesis of polymers with diverse main-chain structural motifs with tailored functions. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present disclosure.