[PDF] Diels-Alder Reaction (a very important reaction) Reaction between a
Typical electron donating groups on the diene are ethers, amines and sulfide; all have a non- bonding pair of electrons to donate The regiochemistry of this Diels-Alder reaction is explained by looking at the dipolar resonance structures
[PDF] Substituent Effects on Simple Diels-Alder Reactions - IJCRCPS
Normal electron demand Diels Alder reactions are promoted by electron donating substituent on diene and electron withdrawing substituent on the dienophile In contrast, inverse electron demand Diels Alder reactions are accelerated by electron withdrawing groups on diene and electron donating ones on dienophile
[PDF] Diels-Alder Reaction - Dr May Group
EWG (electron withdrawing group) = COR, CO2R, COAr, NO2, etc HOMO LUMO HOMO LUMO or Reviews: Nicolaou et al Angew Chem
Diels–Alder reaction
EDG = electron-donating group; EWG = electron-withdrawing group Example 16 OMe CO2Et Me3SiO OMe CO2Et H Me3SiO AcO OAc hydroquinone
[PDF] Experiment 10 The Diels-Alder Reaction [see: Eges 184, pp 742
27 mai 2011 · Dienophiles: More electron-deficient dienophiles undergo faster Diels-Alder Reactions X: electron-donating groups such as -OCH3 and -NRR'
Unconventional exo selectivity in thermal normal-electron - Nature
12 oct 2016 · Figure 1 General stereoselective prediction for normal-electron-demand Diels– Alder reactions EWG = electron-withdrawing group, EDG =
[PDF] THE VIRTUAL KINETICS OF A DIELS-ALDER CYCLOADDITION
The Diels-Alder reaction, a [4+2] cycloaddition of a conjugated diene and an alkene as hydroxy and alkoxy) on the diene, and/or electron-withdrawing groups
[PDF] Lecture 23 Organic Chemistry 1 - UIC Chemistry - University of
6 avr 2010 · Reactivity of Diels-Alder 4 Electron donating groups (EDG) increase the reactivity of the diene = faster reaction Electron withdrawing groups
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