In the following practice problems, we will discuss the mechanisms of pericyclic reactions, including electrocyclic reactions and cycloaddition reactions. We will use orbital symmetry to predict whether reactions proceed through ring opening or ring closure and practice identifying the stereochemistry … Read more
This content is for registered users only. Click here to Register! By joining Chemistry Steps, you will gain instant access to the answers and solutions for all the Practice Problems, including over 40 hours of problem-solving videos, Multiple-Choice Quizzes, Puzzles, Reaction … Read more
This content is for registered users only. Click here to Register! By joining Chemistry Steps, you will gain instant access to the answers and solutions for all the Practice Problems, including over 40 hours of problem-solving videos, Multiple-Choice Quizzes, Puzzles, Reaction … Read more
The main component of the stereochemistry of the Diels-Alder reaction that you are going to see in your class is the formation of endo and exo products when cyclic dienes react with dienophiles. The most common products in the reactions … Read more
We have seen that the product of the Diels-Alder reaction is most often a cyclohexene derivative. The ring is formed by the newly formed sigma bonds between the diene and the dienophile, which means 4 conjugated atoms combine with 2 … Read more
Let’s talk about the retro Diels-Alder reaction. In simpler words, this is the reverse of a given Diels-Alder reaction, which we are mainly going to need for identifying the starting materials that reacted in a particular Diels-Alder reaction. If you … Read more
In this comprehensive set of practice problems, we will work through examples of Diels–Alder reactions that include both normal and retro Diels-Alder cases, as well as variations in regioselectivity and stereoselectivity. We will also look at endo and exo selectivity, … Read more
Ibogamine is a naturally occurring iboga-type indole alkaloid found in Tabernanthe iboga and related species, and belongs to the same structural family as ibogaine, tabernanthine, and coronaridine. Like other iboga alkaloids, ibogamine has been studied for its psychoactive and potential … Read more
In this post, we will discuss and show the mechanisms of some important reactions of lactones and lactams, such as their preparation, acid- and base-catalyzed hydrolysis, and reduction by LiAlH4. We will also go over the Grignard reaction of lactones. … Read more
When a beta hydroxy carbonyl compound is treated with a moderately strong base, such as a hydroxide or an alkoxide, an elimination occurs by expelling the hydroxyl group. The most common example is the aldol condensation reaction: So, … Read more
