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- https://chem.libretexts.org/Bookshelves/Organic_Chemistry/Organic_Chemistry_II_(Morsch_et_al.)/14%3A_Conjugated_Compounds_and_Ultraviolet_Spectroscopy/14.04%3A_The_Diels-Alder_Cycloaddition_ReactionIn the Diels-Alder reaction, a conjugated diene, simply referred to as the diene, reacts with a double or triple bond co-reactant called the dienophile, because it combines with (has an affinity for) ...In the Diels-Alder reaction, a conjugated diene, simply referred to as the diene, reacts with a double or triple bond co-reactant called the dienophile, because it combines with (has an affinity for) the diene. The mechanism occurs through a cyclic transition state in which there is head-on overlap of two p orbitals on carbons 1 and 4 of the diene with the two p orbitals from the alkene of the dienophile to form two new sigma bonds in the cyclohexene product.
- https://chem.libretexts.org/Courses/Smith_College/CHM_223_Chemistry_III%3A_Organic_Chemistry_(2024)/08%3A_Conjugated_Compounds_and_Ultraviolet_Spectroscopy/8.05%3A_The_Diels-Alder_Cycloaddition_ReactionIn the Diels-Alder reaction, a conjugated diene, simply referred to as the diene, reacts with a double or triple bond co-reactant called the dienophile, because it combines with (has an affinity for) ...In the Diels-Alder reaction, a conjugated diene, simply referred to as the diene, reacts with a double or triple bond co-reactant called the dienophile, because it combines with (has an affinity for) the diene. The mechanism occurs through a cyclic transition state in which there is head-on overlap of two p orbitals on carbons 1 and 4 of the diene with the two p orbitals from the alkene of the dienophile to form two new sigma bonds in the cyclohexene product.
- https://chem.libretexts.org/Courses/can/CHEM_232_-_Organic_Chemistry_II_(Puenzo)/01%3A_Conjugated_Compounds_and_Ultraviolet_Spectroscopy/1.05%3A_The_Diels-Alder_Cycloaddition_ReactionThe mechanism occurs through a cyclic transition state in which there is head-on overlap of two p orbitals on carbons 1 and 4 of the diene with the two p orbitals from the alkene of the dienophile to ...The mechanism occurs through a cyclic transition state in which there is head-on overlap of two p orbitals on carbons 1 and 4 of the diene with the two p orbitals from the alkene of the dienophile to form two new sigma bonds in the cyclohexene product. It works by slowing the production of cholesterol in the body to decrease the amount of cholesterol that may build up on the walls of the arteries and block blood flow to the heart, brain, and other parts of the body.
- https://chem.libretexts.org/Courses/Smith_College/Organic_Chemistry_(LibreTexts)/14%3A_Conjugated_Compounds_and_Ultraviolet_Spectroscopy/14.05%3A_The_Diels-Alder_Cycloaddition_ReactionIn the Diels-Alder reaction, a conjugated diene, simply referred to as the diene, reacts with a double or triple bond co-reactant called the dienophile, because it combines with (has an affinity for) ...In the Diels-Alder reaction, a conjugated diene, simply referred to as the diene, reacts with a double or triple bond co-reactant called the dienophile, because it combines with (has an affinity for) the diene. The mechanism occurs through a cyclic transition state in which there is head-on overlap of two p orbitals on carbons 1 and 4 of the diene with the two p orbitals from the alkene of the dienophile to form two new sigma bonds in the cyclohexene product.
- https://chem.libretexts.org/Ancillary_Materials/Reference/Organic_Chemistry_Glossary/Pericyclic_ReactionA pericyclic reaction is a concerted reaction in which the number of rings in the transition state is greater than the total number of rings in the reactant molecules.
- https://chem.libretexts.org/Bookshelves/Organic_Chemistry/Organic_Chemistry_(OpenStax)/14%3A_Conjugated_Compounds_and_Ultraviolet_Spectroscopy/14.04%3A_The_Diels-Alder_Cycloaddition_ReactionPerhaps the most striking difference between conjugated and nonconjugated dienes is that conjugated dienes undergo an addition reaction with alkenes to yield substituted cyclohexene products. This pro...Perhaps the most striking difference between conjugated and nonconjugated dienes is that conjugated dienes undergo an addition reaction with alkenes to yield substituted cyclohexene products. This process, named the Diels–Alder cycloaddition reaction after its discoverers, is extremely useful in the laboratory because it forms two carbon–carbon bonds in a single step and is one of the few general methods available for making cyclic molecules.
- https://chem.libretexts.org/Bookshelves/Organic_Chemistry/Supplemental_Modules_(Organic_Chemistry)/Reactions/Pericyclic_Reactions/Woodward_Hoffmann_rulesRobert Burns Woodward and Roald Hoffmann devised these set of rules to explain the stereochemistry of pericyclic reactions based on the orbital symmetry.
- https://chem.libretexts.org/Workbench/LCDS_Organic_Chemistry_OER_Textbook_-_Todd_Trout/14%3A_Conjugated_Compounds_and_Ultraviolet_Spectroscopy/14.05%3A_The_Diels-Alder_Cycloaddition_ReactionThis process, named the Diels–Alder cycloaddition reaction after its discoverers, is extremely useful in the laboratory because it forms two carbon–carbon bonds in a single step and is one of the few ...This process, named the Diels–Alder cycloaddition reaction after its discoverers, is extremely useful in the laboratory because it forms two carbon–carbon bonds in a single step and is one of the few general methods available for making cyclic molecules. (As the name implies, a cycloaddition reaction is one in which two reactants add together to give a cyclic product.) The 1950 Nobel Prize in Chemistry was awarded to Otto Diels and Kurt Alder in recognition of the importance of their discovery.
- https://chem.libretexts.org/Bookshelves/Organic_Chemistry/Basic_Principles_of_Organic_Chemistry_(Roberts_and_Caserio)/21%3A_Resonance_and_Molecular_Orbital_Methods/21.11%3A_Pericyclic_ReactionsThere are numerous reactions in organic chemistry that proceed through cyclic transition states. They may be classified generally as pericyclic reactions. An important and familiar example is the Diel...There are numerous reactions in organic chemistry that proceed through cyclic transition states. They may be classified generally as pericyclic reactions. An important and familiar example is the Diels-Alder reaction, in which a conjugated diene cycloadds to an alkene or alkyne.
- https://chem.libretexts.org/Ancillary_Materials/Reference/Organic_Chemistry_Glossary/Claisen_RearrangementThe Claisen rearrangement, not to be confused with the Claisen condensation, is the conversion of an allyl phenyl ether into an ortho allylphenol at very high temperature.
- https://chem.libretexts.org/Bookshelves/Organic_Chemistry/Organic_Chemistry_(Morsch_et_al.)/14%3A_Conjugated_Compounds_and_Ultraviolet_Spectroscopy/14.04%3A_The_Diels-Alder_Cycloaddition_ReactionIn the Diels-Alder reaction, a conjugated diene, simply referred to as the diene, reacts with a double or triple bond co-reactant called the dienophile, because it combines with (has an affinity for) ...In the Diels-Alder reaction, a conjugated diene, simply referred to as the diene, reacts with a double or triple bond co-reactant called the dienophile, because it combines with (has an affinity for) the diene. The mechanism occurs through a cyclic transition state in which there is head-on overlap of two p orbitals on carbons 1 and 4 of the diene with the two p orbitals from the alkene of the dienophile to form two new sigma bonds in the cyclohexene product.
