Named reactions and mechanisms taught in a college organic chemistry sequence.
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- SN2 reaction: What is the stereochemical outcome?
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Inversion of configuration (Walden inversion)- SN2 rate law: rate depends on what concentrations?
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Rate = k[RX][Nu-]; first order in alkyl halide and first order in nucleophile- SN1 rate law: rate depends on what concentrations?
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Rate = k[RX]; first order in alkyl halide only- SN1 mechanism: What is the carbocation intermediate called?
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Carbocation (or carbenium ion)- SN2 mechanism: How many steps does it have?
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One step (concerted, single transition state)- SN1 mechanism: How many steps does it have?
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Two steps: ionization (slow) and nucleophilic attack (fast)- For SN2, which substrate is most reactive: primary, secondary, or tertiary alkyl halide?
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Primary alkyl halide- For SN1, which substrate is most reactive: primary, secondary, or tertiary alkyl halide?
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Tertiary alkyl halide- SN2 reactions: Which solvent increases the reaction rate - protic or aprotic?
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Aprotic (polar aprotic), such as DMSO or DMF- SN1 reactions on a stereocenter produce what instead of a single stereoisomer?
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A racemic mixture (equal mixture of R and S enantiomers)- E2 elimination: What is the stereochemical requirement for H and leaving group?
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Anti-periplanar (180 degrees apart, opposite sides of the C-C bond)- E2 rate law: rate depends on what concentrations?
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Rate = k[RX][B]; first order in alkyl halide and first order in base- E1 rate law: rate depends on what concentrations?
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Rate = k[RX]; first order in alkyl halide only- E1 mechanism: What is the intermediate formed?
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A carbocation- With a primary substrate and strong base at high temperature, which reaction dominates: E2 or SN2?
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E2 (elimination)
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