56539-66-3Relevant articles and documents
3 - methyl - 1, 3 - butanediol production
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Paragraph 0021, (2017/06/02)
PROBLEM TO BE SOLVED: To provide a method for producing 3-methyl-1, 3-butanediol of extremely high quality which has an extremely low odor and can be used for cosmetics.SOLUTION: There is provided a method for producing 3-methyl-1, 3-butanediol which comprises a step of performing distillation purification while supplying 3-methyl-1, 3-butanediol and water and/or steam.
3 - methyl-butanol -1 - production of -3 - alkoxy
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Paragraph 0028; 0030; 0032, (2017/04/29)
Provided is a method for producing 3-alkoxy-3-methyl-1-butanol with high selectivity and high yield. Specifically provided is a method for producing 3-alkoxy-3-methyl-1-butanol, wherein at least one kind of methyl butenol that is selected from among 3-methyl-3-buten-1-ol and 3-methyl-2-buten-1-ol is reacted with a primary alcohol having 1-5 carbon atoms in the presence of an acid. In this method for producing 3-alkoxy-3-methyl-1-butanol, the reaction is carried out, while controlling the water content in the reaction mixture to 0.3% by mass or less.
A powerful tool for acid catalyzed organic addition and substitution reactions
Turhanen, Petri A.,Veps?l?inen, Jouko J.
, p. 26218 - 26222 (2015/10/20)
A novel green chemistry tool for acid catalyzed reactions has been developed. The multipurpose tool is based on the ability of dry solid materials to donate protons (H+) to starting materials combined with the simultaneous use of a nucleophile (e.g. NaI). The methods enable the following reactions to be conducted at 20-50 °C: selective addition of iodine or alcohols to more substituted carbon in R2CCH2 systems (R ≠ H), esterification reactions, e.g. free fatty acids with methanol, and at higher temperatures, (60-100 °C): esterification of free fatty acids with hindered alcohols (isopropanol), addition of iodine to CC bonds, opening of oxygen(s) containing heterocyclic rings, selective substitution of primary OH groups to iodine in the presence of other functional groups or secondary alcohol groups, esterification of alcohols with nitriles (R-CN), transesterification of fatty acid triglycerides to biodiesel and selective derivatization of primary hydroxyl groups (-CH2OH) over secondary moieties of sugars without any protection. Most of the reactions were also performed by a re-used Dowex cation exchange resin.
Catalysis in a porous molecular capsule: Activation by regulated access to sixty metal centers spanning a truncated icosahedron
Kopilevich, Sivil,Gil, Adria,Garcia-Rates, Miquel,Bonet-Avalos, Josep,Bo, Carles,Mueller, Achim,Weinstock, Ira A.
experimental part, p. 13082 - 13088 (2012/10/08)
The 30 cationic {MoV2O4(acetate)} + units linking 12 negatively charged pentagonal "ligands," {(MoVI)MoVI5O21(H 2O)6}6- of the porous metal-oxide capsule, [{MoVI6O21(H2O)6} 12{MoV2O4(acetate)} 30]42- provide active sites for catalytic transformations of organic "guests". This is demonstrated using a well-behaved model reaction, the fully reversible cleavage and formation of methyl tert-butyl ether (MTBE) under mild conditions in water. Five independent lines of evidence demonstrate that reactions of the MTBE guests occur in the ca. 6 × 10 3 A3 interior of the spherical capsule. The Mo atoms of the {MoV2O4(acetate)}+ linkers - spanning an ca. 3-nm truncated icosahedron - are sterically accessible to substrate, and controlled removal of their internally bound acetate ligands generates catalytically active {MoV2O4(H 2O)2}2+ units with labile water ligands, and Lewis- and Bronsted-acid properties. The activity of these units is demonstrating by kinetic data that reveal a first-order dependence of MTBE cleavage rates on the number of acetate-free {MoV2O 4(H2O)2}2+ linkers. DFT calculations point to a pathway involving both Mo(V) centers, and the intermediacy of isobutene in both forward and reverse reactions. A plausible catalytic cycle - satisfying microscopic reversibility - is supported by activation parameters for MTBE cleavage, deuterium and oxygen-18 labeling studies, and by reactions of deliberately added isobutene and of a water-soluble isobutene analog. More generally, pore-restricted encapsulation, ligand-regulated access to multiple structurally integral metal-centers, and options for modifying the microenvironment within this new type of nanoreactor, suggest numerous additional transformations of organic substrates by this and related molybdenum-oxide based capsules.
