598-32-3Relevant articles and documents
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Fuchs,Van-derWerf
, p. 5917 (1952)
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Evidence for a Concerted SN2' Mechanism in the Gas-Phase Acid-induced Nucleophilic Substitutions on Allylic Substrates
Dezi, Emanuela,Lombardozzi, Antonietta,Pizzabiocca, Adriano,Renzi, Gabriele,Speranza, Maurizio
, p. 547 - 548 (1995)
Gas phase nucleophilic substitution on oxygen-protonated but-1-en-3-ol and trans-but-2-en-1-ol by methanol proceeds via the concerted SN2' mechanism in competition with the classical SN2 mechanism.
THE cis REDUCTION OF 4-(TRIMETHYLSILYL)-3-BUTYN-2-OL WITH LITHIUM ALUMINIUM HYDRIDE
Mancini, Michael L.,Honek, John F.
, p. 4295 - 4298 (1983)
A systematic study led to a method for the preparation of (Z)-4-(trimethylsilyl)-3-buten-2-ol (2) in at least 99percent purity by the reduction of the alkyne 4-(trimethylsilyl)-3-butyn-2-ol (1) with lithium aluminium hydride (LAH) as a clear solvate in ether.
Probing Molecular Motion and Chemical Reactions inside the Chiral Tri-o-thymotide Clathrate Cavity by Solid State NMR Techniques
Facey, Glenn,Ripmeester, John A.
, p. 1585 - 1587 (1990)
Solid state NMR techniques offer a non-destructive alternative to wet chemistry methods in following enantiomeric excess and reactions in chiral clathrates, and show that the two optically distinct populations, one of which cannot be defined by X-ray diffraction, can be characterized by their distinct dynamic behaviour.
Vapor-phase dehydration of 1,4-butanediol to 1,3-butadiene over Y2Zr2O7 catalyst
Matsuda, Asami,Matsumura, Yoshitaka,Sato, Satoshi,Yamada, Yasuhiro
, (2021/09/16)
Vapor-phase catalytic dehydration of 1,4-butanediol (1,4-BDO) was investigated over Y2O3-ZrO2 catalysts. In the dehydration, 1,3-butadiene (BD) together with 3-buten-1-ol (3B1OL), tetrahydrofuran, and propylene was produced depending on the reaction conditions. In the dehydration over Y2O3-ZrO2 catalysts with different Y contents at 325°C, Y2Zr2O7 with an equimolar ratio of Y/Zr showed high selectivity to 3B1OL, an intermediate to BD. In the dehydration at 360°C, a BD yield higher than 90% was achieved over the Y2Zr2O7 calcined at 700°C throughout 10 h. In the dehydration of 3B1OL over Y2Zr2O7, however, the catalytic activity affected by the calcination temperature is roughly proportional to the specific surface area of the sample. The highest activity of Y2Zr2O7 calcined at 700 °C for the BD formation from 1,4-BDO is explained by the trade-off relation in the activities for the first-step dehydration of 1,4-BDO to 3B1OL and for the second-step dehydration of 3B1OL to BD. The higher reactivity of 3B1OL than saturated alcohols such as 1-butanol and 2-butanol suggests that the C=C double bond of 3B1OL induces an attractive interaction to anchor the catalyst surface and promotes the dehydration. A probable mechanism for the one-step dehydration of 1,4-BDO to BD was discussed.
PROCESS FOR PRODUCING DIENES
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Page/Page column 30-34, (2021/06/26)
A process for producing a diene, preferably a conjugated diene, more preferably 1,3-butadiene, comprising dehydrating at least one alkenol in the presence of at least one catalytic material comprising at least one acid catalyst based on silica (SiO2) and alumina (AI2O3), preferably a silica-alumina (SiO2-Al2O3), said catalyst having an alumina content (Al2O3) lower than or equal to 12% by weight, preferably between 0.1% by weight and 10% by weight, with respect to the catalyst total weight, said alumina content being referred to the catalyst total weight without binder, and a pore modal diameter between 9 nm and 170 nm, preferably between 10 nm and 150 nm, still more preferably between 12 nm and 120 nm. Preferably, said alkenol can be obtained directly from biosynthetic processes, or by catalytic dehydration processes of at least one diol, preferably a butanediol, more preferably 1,3-butanediol, still more preferably bio-1,3-butanediol, deriving from biosynthetic processes. Preferably, said 1,3-butadiene is bio-1,3-butadiene.
