Lithium Hexafluorophosphate-Catalyzed Efficient Tetrahydropyranylation of Tertiary Alcohols under Mild Reaction Conditions
作者:Tsuneo Sato、Nao Hamada
DOI:10.1055/s-2004-829550
日期:——
Lithium hexafluorophosphate is found to be an efficientcatalyst for the tetrahydropyranylation of tertiary alcohols with dihydropyran under mild reaction conditions.
Efficient Tetrahydropyranylation of Alcohols and Detetrahydropyranylation Reactions in the Presence of Catalytic Amount of Trichloroisocyanuric Acid (TCCA) as a Safe, Cheap Industrial Chemical
Abstract Preparation and cleavage of THP ethers of different hydroxy functional groups are easily and efficiently performed in the presence of trichloroisocyanuric acid (TCCA) in the absence of solvent with high yields.
A Mild and Efficient Tetrahydropyranylation of Alcohols
作者:Kyung Hoi Cha、Tae Won Kang、Hong-Woo Lee、Eung-Nam Kim、Nam-Hee Choi、Jung-Woo Kim、Chung Il Hong
DOI:10.1080/00397919808007027
日期:1998.6
Abstract Triphenylphosphine (TPP)-iodotrimethylsilane (TMSI) was found to be a convenient and highly effective catalyst for the tetrahydropyranylation of aliphatic and aromatic alcohols with dihydropyran in dichloromethane at ambient temperature.
Lithium triflate (LiOTf) catalyzed efficient and chemoselective tetrahydropyranylation of alcohols and phenols under mild and neutral reaction conditions
作者:Babak Karimi、Jafar Maleki
DOI:10.1016/s0040-4039(02)00892-4
日期:2002.7
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.