Catalysis of organic reactions by molecular sieve systems

Shabtai, J.; Lazar, R.; Biron, Ehud

doi:10.1016/0304-5102(84)85068-3

Cited by 77 publications

(14 citation statements)

References 11 publications

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“…The formation of ethanol in the reaction and the trace amount of acetaldehyde observed in the GC-MS analysis confirmed this proposal. Zeolite-mediated MPV reduction of aldehydes and ketones have already been reported [14][15][16][17]. These reports also validate our assumption.…”

Section: Resultssupporting

confidence: 91%

Cyclisation of (phenylthio)acetaldehyde diethylacetal in the presence of dealuminated beta zeolites: an unexpected Meerwein–Ponndorf–Verley reduction

Cheralathan

Palanichamy

Murugesan

2004

Applied Catalysis A: General

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Section: Resultssupporting

confidence: 91%

Cyclisation of (phenylthio)acetaldehyde diethylacetal in the presence of dealuminated beta zeolites: an unexpected Meerwein–Ponndorf–Verley reduction

Cheralathan

Palanichamy

Murugesan

2004

Applied Catalysis A: General

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“…However, zeolites can also be prepared in forms containing basic sites. One of the earliest uses of these materials in the MPV reaction was reported by Shabtai et al [51]. These authors used commercial zeolites of the NaX and CaX types, and various Li-, Rb-, Cs-and Ba-containing synthetic zeolites in the gas-phase MPV reduction of saturated and unsaturated carbonyl compounds with 2-propanol as hydrogen donor.…”

Section: Mpv Reduction Over Zeolitic Materialsmentioning

confidence: 98%

Heterogeneous Catalysis in the Meerwein-Ponndorf-Verley Reduction of Carbonyl Compounds

Ruíz¹,

Jiménez‐Sanchidrián

2007

COC

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The Meerwein-Ponndorf-Verley (MPV) reaction involves the catalysed transfer of hydrogen from an alcohol to a carbonyl compound and provides an effective method for synthesizing carbonyl compounds under very mild conditions. The method, which requires the use of a catalyst, is high selective as it leaves most reducible functional groups in the carbonyl reactant untouched. The classical MPV reaction is conducted in a homogeneous phase, usually in the presence of a metal alkoxide as catalyst. The process has been extensively studied over the past 15 years, using heterogeneous catalysts that minimize or avoid many of the problems inherent in homogeneous catalysis. The most widely used among such catalysts consist of metal oxides (particularly aluminium, magnesium and zirconium oxides), magnesium phosphates, layered double hydroxides, mesoporous solids and zeolitic compounds. These materials vary widely in nature and include acid, basic, neutral, mesoporous and microporous solids. This allows virtually any type of carbonyl compound to be reduced by using an appropriate available catalyst. This paper reviews the most salient advances in MPV reduction processes involving heterogeneous catalysts, with emphasis of the reaction proper rather than on the nature of the catalyst. Special attention is given to the shape selectivity provided by zeolitic materials and layered double hydroxides for some carbonyl compounds.

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“…This reaction gave mainly citronellol (2) or mainly isopulegol (5) depending on the compensating cation used [14] the bulkier ones favouring the hydrogen transfer reaction. The effect of Cu content on product distribution is reported in Figure 2.…”

Section: Full Papersmentioning

confidence: 99%

Tuning Selectivity in Terpene Chemistry: Selective Hydrogenation versus Cascade Reactions over Copper Catalysts

et al. 2005

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The selectivity of Cu/Al 2 O 3 under very mild catalytic hydrogenation conditions can be tuned only by switching the solvent. Geraniol can be converted in a one-pot one-step process into a mixture of citronellol and menthol in hydrocarbon solvents or reduced to citronellol with 98% selectivity in 2-propanol without any additive. Both reactions can be applied to essential oils or synthetic mixtures containing geraniol, citronellal and nerol.

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Catalysis of organic reactions by molecular sieve systems

Cited by 77 publications

References 11 publications

Cyclisation of (phenylthio)acetaldehyde diethylacetal in the presence of dealuminated beta zeolites: an unexpected Meerwein–Ponndorf–Verley reduction

Cyclisation of (phenylthio)acetaldehyde diethylacetal in the presence of dealuminated beta zeolites: an unexpected Meerwein–Ponndorf–Verley reduction

Heterogeneous Catalysis in the Meerwein-Ponndorf-Verley Reduction of Carbonyl Compounds

Tuning Selectivity in Terpene Chemistry: Selective Hydrogenation versus Cascade Reactions over Copper Catalysts

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