What’s a Transition State?
…An intermediate is a species at an energy minimum in a reaction coordinate, and is (in theory) isolable. Carbocations and free-radicals are examples of intermediates. Transition State = The Point…
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Reagent Friday: PCC (Pyridinium Chlorochromate)
Pyridinium Chlorochromate (PCC), A Useful Oxidant For Alcohols In Organic Chemistry In a blatant plug for the Reagent Guide, each Friday I profile a different reagent that is commonly encountered…
Read more“Reagents”: A Pocket Encyclopedia of Reagents for Organic Chemistry
…features of Reagents: Profiles of over 80 reagents, along with their key reactions. Examples of each of the representative reactions of each reagent. There’s hundreds of example reactions in all,…
Read morePolar Protic? Polar Aprotic? Nonpolar? All About Solvents
…less than consistent about when to include solvents and when not to. So the whole exercise can come across as somewhat arbitrary: when do you know when to include the…
Read moreEquilibrium and Energy Relationships
…“For Free” By Lowering The Temperature Up until now we’ve been examining the relationship between free energy and equilibrium constant at room temperature (298 K) What happens to the equilibrium…
Read more3 Factors That Stabilize Carbocations
…structure and properties of the vast majority [Note 2] of carbocations closely resemble those of neutral boron compounds. Both carbocations and neutral boron compounds generally have an sp2-hybridized central atom…
Read moreWhat makes a good leaving group?
…weaker base than the nucleophile (or base). In fact, the four components of an acid base reaction map pretty well onto the four components of the nucleophilic substitution reactions, above….
Read moreReagent Friday: Sodium (Na)
…that is commonly encountered in Org 1/ Org 2. Today’s topic, sodium metal is a pretty notorious reagent. You might know it from Youtube as “That solid that you drop…
Read moreWittig Reaction
…examples above rigorously avoided any situation where a mixture of E and Z alkenes could be obtained. What happens when we try to combine an aldehyde (or unsymmetrical ketone) with…
Read moreGuest post: “I went from being afraid of tests to actually looking forward to them”.
…towels are free, and blue ink shows up on them well. I’d put a red mark next to every question I missed. And I’d write comments and hints in the…
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