27122-63-0Relevant academic research and scientific papers
Addition of alcohols and acids to olefins in presence of zeolite catalyst H-beta
Raskildina, Gulnara Z.,Kazakova, Anna N.,Mikhailova, Natalia N.,Grigor'Eva, Nelly G.,Kutepov, Boris I.,Zlotsky, Simon S.
, p. 811 - 815 (2015/06/30)
By studying the reactions of styrene and norbornene with different alcohols and carbonic acids in the presence of heterogenic catalyst, it was found that the selected zeolite H-Beta is an active and selective catalyst for these reactions. Ethers and esters of norbornene have exo-configuration. It has been established that reaction of norbornene with diols, catalyzing by zeolite Beta, leads to the formation of esters, which have not been found before.
Cationic platinum-catalyzed etherification by intra- and intermolecular dehydration of alcohols
Shibata, Takanori,Fujiwara, Ryo,Ueno, Yasunori
, p. 152 - 154 (2007/10/03)
Catalytic etherification of diols proceeds to give various cyclic ethers by use of cationic platinum salt, which is in situ prepared from PtCl2 and AgSbF6. Etherification of benzylic alcohols is also possible by intermolecular dehydration. Both of intra- and intermolecular etherifications smoothly proceed even under an atmosphere of air.
Facile and selective deallylation of allyl ethers using diphosphinidenecyclobutene-coordinated palladium catalysts
Murakami, Hiromi,Minami, Tatsuya,Ozawa, Fumiyuki
, p. 4482 - 4486 (2007/10/03)
(π-Allyl)palladium triflate bearing a 1,2-bis(4-methoxyphenyl)-3,4- bis(2,4,6-tri-tert-butylphenylphosphinidene)cyclobutene ligand (DPCB-OMe), [Pd(η3-C3H5)(DPCB-OMe)]OTf, efficiently catalyzes deallylation of a variety of allyl ethers in aniline to give corresponding alcohols in high yields under mild conditions. The reactions can be performed in air without loss of a variety of functionalities including vinyl, alkynyl, hydroxy, acetoxy, silyloxy, and acetal groups. Allyl 2-allyloxybenzoate selectively undergoes deallylation of the allyloxy group to give allyl salicylate in quantitative yield.
Organic reactions catalyzed by methylrhenium trioxide: Dehydration, amination, and disproportionation of alcohols
Zhu, Zuolin,Espenson, James H.
, p. 324 - 328 (2007/10/03)
Methylrhenium trioxide (MTO) is the first transition metal complex in trace quantity to catalyze the direct formation of ethers from alcohols. The reactions are independent of the solvents used: benzene, toluene, dichloromethane, chloroform, acetone, and in the alcohols themselves. Aromatic alcohols gave better yields than aliphatic. Reactions between two different alcohols could also be used to prepare unsymmetric ethers, the best yields being obtained when one of the alcohols is aromatic. MTO also catalyzes the dehydration of alcohols to form olefins at room temperature, aromatic alcohols proceeding in better yield. When primary (secondary) amines were used as the limiting reagent, direct amination of alcohols catalyzed by MTO gave good yields of the expected secondary (tertiary) amines at room temperature. Disproportionation of alcohols to alkanes and carbonyl compounds was also observed for aromatic alcohols in the presence of MTO. On the basis of the results of this investigation and a comparison with the interaction between MTO and water, a concerted process and a mechanism involving carbocation intermediates have been suggested.
Efficient reductive etherification of carbonyl compounds with alkoxytrimethylsilanes
Hatakeyama, Susumi,Mori, Hisato,Kitano, Kaori,Yamada, Hidetoshi,Nishizawa, Mugio
, p. 4367 - 4370 (2007/10/02)
An efficient TMSOTf catalyzed ether synthesis from carbonyl compounds and alkoxytrimethylsilanes via triethylsilane-reduction is described.
Elaboration of α-Substituted Benzyl Ethers and Sulphides by Suppression of the Wittig and Related Rearrangements
Davies, Stephen G.,Holman, Nicholas J.,Laughton, Charles A.,Mobbs, Bryan E.
, p. 1316 - 1317 (2007/10/02)
Co-ordination of benzyl alkyl ethers and sulphides to chromium tricarbonyl allows α-substitution via the corresponding α-carbanions to be achieved by suppression of the Wittig and related rearrangements.
