259209-11-5Relevant academic research and scientific papers
Zwitterionic imidazolium salt: An efficient organocatalyst for tetrahydropyranylation of alcohols
Mahato, Sachinta,Chatterjee, Rana,Chakraborty Ghosal, Nirnita,Majee, Adinath
supporting information, p. 1905 - 1915 (2017/10/07)
An aprotic imidazole based zwitterionic-salt, 4-(3-methylimidazolium)-butane sulfonate has been found to be an efficient organocatalyst for tetrahydropyranylation by the reaction of 3,4-dihydro-2H-pyran (DHP) and different aliphatic alcohols as well as various phenolic compounds. The notable advantages of the present method are general applicability to various alcohols, clean reaction, production of no hazardous waste, open air reaction conditions and high yields. The catalyst can be reused without the loss of significant catalytic activity.
Acid-washed bentonite: A new reagent for the deprotection of tetrahydropyranyl ethers
Poon, Po.S.,Banerjee, Ajoy K.,Bedoya, Liadis,Sanchez, Jennifer,Laya, Manuel S.
experimental part, p. 477 - 479 (2011/10/18)
Acid-washed (pH 4 and pH 6) bentonite earth cleaves the tetrahydropyranyl ethers to the corresponding alcohols in good yield under mild conditions.
Ruthenium(III) acetylacetonate [Ru(acac)3] - An efficient chemoselective catalyst for the tetrahydropyranylation (THP) of alcohols and phenols under solvent-free conditions
Varala, Ravi,Adapa, Srinivas R.
, p. 1174 - 1179 (2007/10/03)
A catalytic amount of ruthenium(III) acetylacetonate (2 mol%) [Ru(acac)3] enables solvent-free tetrahydropyranylation of different types of alcohols and phenols at ambient temperature in moderate to excellent yields. Notably, selective monoprotection of diols can be achieved chemoselectively. Furthermore, the catalyst could be recovered and reused if necessary.
Lithium triflate (LiOTf) catalyzed efficient and chemoselective tetrahydropyranylation of alcohols and phenols under mild and neutral reaction conditions
Karimi, Babak,Maleki, Jafar
, p. 5353 - 5355 (2007/10/03)
Different types of alcohols and phenols were effectively converted to the corresponding THP ethers in the presence of DHP and a catalytic amount of lithium trifluoromethanesulfonate (LiOTf) in refluxing 1,2-dichloroethane under essentially neutral reaction conditions. The method also shows good chemoselectivity for mono-tetrahydropyranylation of symmetrical diols.
Bipyridine manganese complexes
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, (2008/06/13)
Compounds and methods of preparing compounds represented by structural formula (I): wherein X represents any suitable counter-anion; R1and R2independently represent hydrogen, C1-6alkoxy or nitro; R3, R4/su
