Lecture

Redox Reactions of Aldehydes

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In course

CH-233: Organic functions and reactions I

Le cours se focalisera sur les composés carbonyles: leur structures, réactivités, et leurs transformations; la réactivité des énols/énolates et leurs réactions fondamentales. L'importance de la compréhension des mécanismes réactionnels, de la chimio-, regi ...

Description

This lecture covers various redox reactions of aldehydes, including the Evans-Tishchenko Reaction, the Cannizzaro Reaction, the Benzoin Reaction, and the Cross Benzoin Reaction. It also discusses the reduction of imines with hydride and the Meerwein-Ponndorf-Verley Reaction. Additionally, it explores the Stetter Reaction mechanism, the Wittig Reaction, and its variants, such as the Horner-Wadsworth-Emmons Reaction. The lecture emphasizes reaction mechanisms, selectivity, and specific examples to illustrate the concepts.

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Instructor

Jieping Zhu

Teaching & PhD PhD Students Morgane Elodie Marie Delattre, Paul Jean Gri, Clément Paul Adrien Rols, Yun Hao Shawn Teh Past EPFL PhD Students Jean-Baptiste Gualtierotti, Ala Bunescu, Thomas Buyck, Olivier Wagnières, Minh Tu Ha, Dylan Jean Robert Dagoneau, Antonin François Roland Clemenceau, Cyril Piemontesi, Nicolas David Gaeng, Mathias Mamboury, Raphaël Beltran, Balázs Budai, Teerawat Songsichan, Alexandre Julien Florent Leclair, Bastien Delayre, Rémi Julien Sylvain Andres, Dina Boyarskaya, Rémi Lavernhe,

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Related concepts (32)

Chemical reaction

A chemical reaction is a process that leads to the chemical transformation of one set of chemical substances to another. Classically, chemical reactions encompass changes that only involve the positions of electrons in the forming and breaking of chemical bonds between atoms, with no change to the nuclei (no change to the elements present), and can often be described by a chemical equation. Nuclear chemistry is a sub-discipline of chemistry that involves the chemical reactions of unstable and radioactive elements where both electronic and nuclear changes can occur.

Organic reaction

Organic reactions are chemical reactions involving organic compounds. The basic organic chemistry reaction types are addition reactions, elimination reactions, substitution reactions, pericyclic reactions, rearrangement reactions, photochemical reactions and redox reactions. In organic synthesis, organic reactions are used in the construction of new organic molecules. The production of many man-made chemicals such as drugs, plastics, food additives, fabrics depend on organic reactions.

Organic chemistry

Organic chemistry is a subdiscipline within chemistry involving the scientific study of the structure, properties, and reactions of organic compounds and organic materials, i.e., matter in its various forms that contain carbon atoms. Study of structure determines their structural formula. Study of properties includes physical and chemical properties, and evaluation of chemical reactivity to understand their behavior.

Pericyclic reaction

In organic chemistry, a pericyclic reaction is the type of organic reaction wherein the transition state of the molecule has a cyclic geometry, the reaction progresses in a concerted fashion, and the bond orbitals involved in the reaction overlap in a continuous cycle at the transition state. Pericyclic reactions stand in contrast to linear reactions, encompassing most organic transformations and proceeding through an acyclic transition state, on the one hand and coarctate reactions, which proceed through a doubly cyclic, concerted transition state on the other hand.

Elimination reaction

An elimination reaction is a type of organic reaction in which two substituents are removed from a molecule in either a one- or two-step mechanism. The one-step mechanism is known as the E2 reaction, and the two-step mechanism is known as the E1 reaction. The numbers refer not to the number of steps in the mechanism, but rather to the kinetics of the reaction: E2 is bimolecular (second-order) while E1 is unimolecular (first-order). In cases where the molecule is able to stabilize an anion but possesses a poor leaving group, a third type of reaction, E1CB, exists.

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