62192-80-7Relevant academic research and scientific papers
Acid-base catalyses by dimeric disilicoicosatungstates and divacant γ-Keggin-type silicodecatungstate parent: Reactivity of the polyoxometalate compounds controlled by step-by-step protonation of lacunary W{double bond, long}O sites
Yoshida, Akihiro,Hikichi, Shiro,Mizuno, Noritaka
, p. 455 - 459 (2008/02/06)
The catalytic properties of disilicoicosatungstates, [{γ-SiW10O32(H2O)2}2(μ-O)2]4- (2) and [H(γ-SiW10O32)2(μ-O)4]7- (3), and their parent divacant γ-Keggin type silicodecatungstate, [γ-SiW10O34(H2O)2]4- (1), toward C-C bond formation reactions have been investigated. The disilicoicosatungstate 2 with aquo ligands exhibits the acidic nature and catalyzes the Mukaiyama-aldol condensation and carbonyl-ene reaction, while 1 and 3 are rather basic and catalyze the Knoevenagel condensation. Therefore, the acid-base properties of a series of lacunary γ-Keggin silicotungstate derivatives 1-3 are clearly different, and the catalyses of 1-3 depend on the molecular structures while 1-3 are composed of a common [SiW10O32] fragment.
Reaction of allylic alcohols with aliphatic alcohols in the presence of cerium(III) chloride. Part II
Uzarewicz,Dresler,Scianowski
, p. 710 - 718 (2007/10/03)
The reactions of selected allylic alcohols with methanol, ethanol, n-propanol, isopropanol and tert-butanol in the presence of catalytic amounts of cerium(III) chloride are described. Allylic alkyl ethers, bis-allylic ethers and 1,3-dienes were obtained d
Microwave-Induced Reactions of Organic Substrates in the Cage of Zeolites
Ipaktschi, Junes,Brueck, Matthias
, p. 1591 - 1593 (2007/10/02)
Microwave irradiation of compounds 1, 7, 15, 19, 23, and 24 adsorbed on Y zeolites has been studied.The reaction rate of the corresponding rearrangement, dehydrogenation and dehydration is dramatically enhanced as compared with reactions under thermal conditions.
