Tamoxifen is a selective estrogen receptor modulator (SERM) widely used in the treatment and prevention of estrogen receptor–positive breast cancer. Structurally, it is a triphenylethylene derivative, consisting of a substituted alkene framework connecting three aromatic rings, along with a basic side chain. … Read more
Risperidone is an atypical antipsychotic medication widely used in the treatment of schizophrenia, bipolar disorder, and irritability associated with autism spectrum disorder. It belongs to a class of drugs known as second-generation antipsychotics, which act primarily by modulating dopamine (D₂) … Read more
Phenol is the simplest member of this family of compounds. It consists of a benzene ring bearing a single hydroxyl group, and many important aromatic compounds can be viewed as derivatives of phenol. As more hydroxyl groups are introduced onto … Read more
Miconazole, an antifungal medication belonging to the azole class and specifically the imidazole subclass, is used to treat a variety of superficial fungal infections, including ringworm, athlete’s foot, jock itch, and yeast infections of the skin or vagina. It is … Read more
Dopamine is a naturally occurring catecholamine neurotransmitter that plays a central role in the brain’s reward, motivation, and motor control pathways. It is also an important pharmaceutical target, as its levels and receptor activity are critical in the treatment of … 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
Decarboxylation is the loss of carbon dioxide upon heating, typically characteristic of carboxylic acids with a β-carbonyl group. These are most often beta-keto acids, malonic acid, or its derivatives: Carboxylic acids by themselves are very stable and do … Read more
Preparation of Aniline There are a few main ways of preparing aniline: Reduction of the Nitro Group We can add a nitro group to benzene or its derivative via a standard nitration using HNO3 and H2SO4, and then reduce the … Read more
In the following practice problems, the reactions and different ways of preparing amines will be discussed. Keep in mind that aside from the reactions specifically related to amines, such as the Gabriel amine synthesis, there are transformations that will require … Read more
Reaction with Primary Aliphatic and Aromatic Amines Primary aliphatic and aromatic amines react with nitrous acid, forming arena diazonium salts, while the reaction of secondary amines gives N-nitrosamines (R2NN=O). Now, let’s take a closer look and see how … Read more
