We have seen a number of important transformations of nitriles, including their conversion to aldehydes and ketones. In today’s post, let’s discuss the reverse transformation, that is, how to convert an aldehyde into a nitrile. Unlike some functional … Read more
We have seen some important transformations of carboxylic acid derivatives, including the hydrolysis of nitriles to carboxylic acids under acidic or basic conditions. So, one question you may encounter on homework assignments is the reverse conversion, that is, going from … Read more
Warfarin is an anticoagulant medication widely used to prevent and treat blood clots, including conditions such as deep vein thrombosis and pulmonary embolism. Chemically, it is a coumarin derivative, featuring a 4-hydroxycoumarin core linked to a substituted side chain. Its … Read more
Medazepam is a benzodiazepine derivative used for its anxiolytic, anticonvulsant, sedative, and skeletal muscle relaxant properties. It has been marketed in various countries under several brand names, including Azepamid, Nobrium, Tranquirax (when combined with bevonium), Rudotel, Raporan, Ansilan, and Mezapam. … Read more
The primary way of preparing alkenes is through elimination reactions of alkyl halides and alcohols. The key difference between these two substrates is that the elimination of alkyl halides follows the E2 mechanism, while alcohols are dehydrated to alkenes via … Read more
We have seen that carbocation rearrangements may lead to unexpected products in SN1 nucleophilic substitution reactions. For example, when the following alkyl halide is reacted with water, the major product of the reaction is formed via a hydride shift, which … 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
Let’s discuss two strategies for preparing nitriles via substitution and dehydration reactions. Synthesis of Nitriles via Substitution Reactions To prepare a nitrile via a substitution reaction, we do an SN2 substitution of alkyl halides, mesylates, or tosylates with … Read more
Preparation of Nitriles Nitriles can be prepared by substitution reactions of alkyl halides with cyanide salts: These are nucleophilic substitution reactions and we introduce the nitrile group by using the nucleophilicity of the cyanide ion. In a similar … Read more
Alkynes and nitriles are structurally similar, so let’s discuss how we can replace one of the carbons in the alkyne with a nitrogen: When one of the carbons is replaced, the carbon chain will be shortened by one. … Read more
