628693-74-3Relevant academic research and scientific papers
Specific Activation by Microwaves: Myth or reality?
Laurent, Regis,Laporterie, Andre,Dubac, Jacques,Berlan, Jacques,Lefeuvre, Serge,Audhuy, Michele
, p. 7099 - 7102 (1992)
Ene reactions involving carbonyl enophiles have been carried out under microwave irradiation at controlled temperature and atmospheric pressure.The reactions of diethyl mesoxalate with 1-decene and β-pinene and the cyclization of (+)-citronellal under hom
METHOD FOR PRODUCING ISOPUREGOL
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Paragraph 0066-0084, (2021/08/21)
PROBLEM TO BE SOLVED: To provide a method for efficiently producing normal isopulegol (n-isopulegol). SOLUTION: There is provided a method for producing isopuregol that includes a step in which citronellal is diastereoselectively ring-closed using an alum
Solvent-free catalysed synthesis of tetrahydropyran odorants: The role of SiO2·p-TSA catalyst on the Prins-cyclization reaction
Macedo, Alexandra,Wendler, Edison P.,Dos Santos, Alcindo A.,Zukerman-Schpector, Julio,Tiekink, Edward R. T.
experimental part, p. 1563 - 1571 (2010/11/04)
An efficient, green and solvent-free catalysed Prins-cyclization reaction based on the simple grinding of an aldehyde and a homoallylic alcohol in the presence of catalytic amount of p-TSA on silica gel is reported. By this protocol were synthesized tetrahydropyran odorants including commercial Florol? and Clarycet?, in one and two steps respectively.
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.
