TETRAHYDROPYRANYLATION

作品数：8被引量：10H指数：2
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相关期刊：《International Journal of Organic Chemistry》《Chinese Journal of Catalysis》《Chinese Journal of Chemistry》《Chinese Chemical Letters》更多>>
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Selective Monoprotection of Symmetrical Diols in a Flow Reactor
《International Journal of Organic Chemistry》2018年第2期264-271,共8页Hisashi Masui Masaru Takizawa Yuki Sakai Yasuhiro Kajiwara Kiyofumi Wanibuchi Mitsuru Shoji Takashi Takahashi 
Desymmetrization reactions provide a powerful approach for the construction of complex molecules. Various methods have been developed for the selective monoprotection of symmetrical diols;however, their application to...
关键词：DESYMMETRIZATION SELECTIVE Monoprotection FLOW Synthesis DIOLS TETRAHYDROPYRANYLATION 
{[K.18-Crown-6]Br_3}_n:A tribromide catalyst for the catalytic protection of amines and alcohols
《催化学报》2013年第9期1730-1733,共4页Gholamabbas Chehardoli Mohammad Ali Zolfigol Fateme Derakhshanpanah 
support for this work from the research affairs of Hamedan University of Medical Sciences,Hamedan,I.R.Iran;partial support of this work by the Research Affairs Office of Bu-Ali Sina University;Center of Excellence in Development of Chemical Method(CEDCM)Hamedan,I.R.Iran
{[K.18-Crown-6]Br3}n,a unique tribromide-type catalyst,was utilized for the N-boc protection of amines and trimethylsilylation(TMS)and tetrahydropyranylation(THP)of alcohols.The method is general for the preparation o...
关键词：{[K.18-Crown-6]Br3}n TRIMETHYLSILYLATION TETRAHYDROPYRANYLATION Alcohol Organic TRIBROMIDE N-boc PROTECTION of amine 
Tetrahydropyranylation of Alcohols and Phenols Using Poly- styrene Supported Lewis Acids as Catalysts
《Chinese Journal of Chemistry》2012年第10期2567-2572,共6页张毅 窦倩倩 刘员 戴立言 王晓钟 陈英奇 
Polystyrene supported TiCI4 （Ps-TiCI4） and polystyrene supported FeC13 （Ps-FeC13） were prepared by coordi- nating Lewis acids with polystyrene. The catalysts were characterized by TGA, BET, SEM, IR and pyri- dine-...
关键词：tetrahydropyranylation/detetrahydropyranylation Ps-TiC14 Ps-FeCI3 polystyrene supported Lewisacids 
Efficient and green tetrahydropyranylation and deprotection of alcohols and phenols by using activated carbon supported sulfuric acid被引量：2
《Chinese Chemical Letters》2008年第8期893-896,共4页Jin Hui Yang Xuan Zhang Wan Yi Liu 
the special research project of the National 973 Foundation of China(No.2006CB708606);the National Natural Science Foundation of China(No.20562010)
A simple, green and efficient method for the DHP protection of various alcohols and phenols and the subsequent removal of the corresponding protective group in the presence of a catalytic amount of the activated carbo...
关键词：TETRAHYDROPYRANYLATION DEPROTECTION THP ethers Activated carbon 
Copper methanesulfonate-acetic acid as a novel catalytic system for tetrahydropyranylation of alcohols and phenols被引量：7
《Chinese Chemical Letters》2007年第7期799-802,共4页Min Wang Zhi Guo Song Hong Gong Heng Jiang 
A synergistic catalytic effect between copper methanesulfonate and acetic acid in tetrahydropyranylation of alcohols and phenol at room temperature under solvent free condition has been described. Both alcohols （prim...
关键词：TETRAHYDROPYRANYLATION Synergistic effect Copper methanesulfonate Acetic acid 
Regioselective tetrahydropyranylation of alcohols catalyzed by Fe(HSO_4)_3被引量：4
《Chinese Chemical Letters》2007年第7期803-806,共4页Farhad Shirini Mohammad Ali Zolfigol Abdol-Reza Abri 
Alcohols are selectively and efficiently protected as their tetrahydropranyl ethers in the presence of a catalytic amount of Fe（HSO4）3 in good to high yields. All reactions are performed under mild and completely he...
关键词：ALCOHOLS TETRAHYDROPYRANYLATION Tetrahydropyranyl ethers Fe（HSO4）3 Heterogeneous reaction conditions 
GaI_3 Catalyzed Tetrahydropyranylation of Alcohols and Phenols被引量：2
《Chinese Journal of Chemistry》2004年第11期1341-1343,共3页孙培培 胡志新 
Project supported by the Natural Science Foundation of the Education Department of Jiangsu province (No. 03KJD150109).
In dichloromethane, the nucleophilic addition of alcohols or phenols to 3,4-dihydro-2H-pyran (DHP) was cata-lyzed effectively by gallium triiodide which was generated in situ by the reaction of gallium metal and iodin...
关键词：gallium triiodide alcohol or phenol 2-alkoxy(aryloxy)tetrahydropyran the protection of hydroxyl group 
A Mild and Practical Procedure for Tetrahydropyranylation of Alcohols and Phenols Catalysed by Anhydrous Ferrous Sulfate
《Chinese Chemical Letters》1998年第3期241-244,共4页Li, TS Zhang, ZH Jin, TS Li, YL 
An easy preparation of tetrahydropyranyl (THP) ethers of alcohols and phenols with 3,4-dihydro-2H-pyran (DHP) in refluxing dichloromethane has been carried out in good to excellent yields under catalysis of anhydrous ...
关键词：preparation tetrahydropyranyl ethers protection of hydroxy catalysis anhydrous ferrous sulfate 
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