Term
Hydrogenation of an alkene is formally a __________, with H2 adding across the double bond to give an __________.
The process usually requires a catalyst containing __________, __________, or __________. |
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Definition
1) Reduction
2) Alkane
3) Platinum
4) Palladium
5) Nickel |
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Term
For most alkenes, __________ takes place at room temperature, using hydrogen gas at atmospheric pressure.
The alkene is usually dissolved in an __________, __________, or __________ __________.
A small amount of a catalyst (either __________, __________, or __________) is added and the container is shaken or stirred while the reaction proceeds.
Hydrogenation takes place at the surface of the metal, where the liquid solution of the alkene comes into contact with __________ and the catalyst. |
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Definition
1) Hydrogenation
2) Alcohol
2) Alkane
3) Acetic acid
4) Platinum
5) Palladium
6) Nickel
7) Hydrogen |
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Term
| One hydrogen gas has been absorbed into the surface of a metal catalyst, the catalyst __________ the H-H bond and often __________ any isotopes present. |
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Definition
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Term
| Hydrogenation is an example of __________ __________ because the catalyst (which is a solid) is in a different phase form the reactant solution (which is liquid). |
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Definition
| 1) Heterogeneous catalyst |
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Term
| A __________ __________ involves reactants and catalysts in the same phase, such as the acid-catalyzed dehydration of an alcohol. |
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Definition
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Term
| When two atoms add from a solid surface, they add with __________ stereochemistry. |
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Definition
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Term
| Soluble homogenous catalysts, such as __________ catalyst, also catalyze the __________ of carbon-carbon double bonds. |
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Definition
1) Wilkinson's
2) Hydrogenation |
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Term
| __________ catalyst is not chiral but its __________ can be replaced by chiral ligands to give chiral catalysts that are capable of converting optically (inactive/active) starting materials to optically (inactive/active) products, a process known as __________ __________ or __________ __________. |
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Definition
1) Wilkinson's
2) PPh3
3) Inactive
4) Active
5) Asymmetric induction
6) Enantioselective synthesis |
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