Catalytic hydration of terminal alkenes to primary alcohols
Journal Article
·
· Science (Washington, D.C.); (United States)
Direct catalytic hydration of terminal alkenes to primary alcohols would be an inexpensive route to industrially useful alcohols and a convenient synthetic route for the synthesis of terminal alcohols in general. The reaction between trans-PtHCl(PMe/sub 3/)/sub 2/ (where Me = CH/sub 3/) and sodium hydroxide in a one-to-one mixture of water and 1-hexene yields a species that, at 60/sup 0/C and in the presence of the phase-transfer catalyst benzyltriethylammonium chloride, catalyzes selective hydration of 1-hexene to n-hexanol at a rate of 6.9 +/- 0.2 turnovers per hour. Hydration of 1-dodecene to n-dodecanol occurs at a rate of 8.3 +/- 0.4 turnovers per hour at 100/sup 0/C. Deuterium labeling experiments with trans-PtDCl(PMe/sub 3/)/sub 2/ show that hydration involves reductive elimination of a C-H bond. At low hydroxide concentrations (<8 equivalents), hydration of the water-soluble olefin 3-butene-1-ol to 1,4-butanediol exhibited a first-order dependence on hydroxide concentration for loss of catalytic activity. This suggest that hydroxide attacks the coordinated alkene slowly. At high hydroxide concentrations, the rate of catalysis was hydroxide-independent and first-order in alkene. Substitution of coordinated water (k/sub 1/ = 9.3 +/- 0.5 x 10/sup -3/ liters per mol per second) appears to be limiting under these conditions.
- Research Organization:
- Univ. of California at San Diego, La Jolla
- OSTI ID:
- 6928205
- Journal Information:
- Science (Washington, D.C.); (United States), Journal Name: Science (Washington, D.C.); (United States) Vol. 233; ISSN SCIEA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
090221* -- Alcohol Fuels-- Chemical Synthesis-- (1976-1989)
10 SYNTHETIC FUELS
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400202 -- Isotope Effects
Isotope Exchange
& Isotope Separation
ALCOHOLS
ALKANES
ALKENES
CATALYSIS
CATALYTIC EFFECTS
CHEMICAL PREPARATION
DEUTERIUM
HYDRATION
HYDROCARBONS
HYDROGEN ISOTOPES
HYDROXY COMPOUNDS
ISOTOPE EFFECTS
ISOTOPES
LIGHT NUCLEI
NUCLEI
ODD-ODD NUCLEI
ORGANIC COMPOUNDS
ORGANOMETALLIC COMPOUNDS
PLATINUM COMPOUNDS
SOLVATION
STABLE ISOTOPES
SYNTHESIS
TRANSITION ELEMENT COMPOUNDS
10 SYNTHETIC FUELS
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400202 -- Isotope Effects
Isotope Exchange
& Isotope Separation
ALCOHOLS
ALKANES
ALKENES
CATALYSIS
CATALYTIC EFFECTS
CHEMICAL PREPARATION
DEUTERIUM
HYDRATION
HYDROCARBONS
HYDROGEN ISOTOPES
HYDROXY COMPOUNDS
ISOTOPE EFFECTS
ISOTOPES
LIGHT NUCLEI
NUCLEI
ODD-ODD NUCLEI
ORGANIC COMPOUNDS
ORGANOMETALLIC COMPOUNDS
PLATINUM COMPOUNDS
SOLVATION
STABLE ISOTOPES
SYNTHESIS
TRANSITION ELEMENT COMPOUNDS