In organic chemistry, the Diels–Alder reaction is a chemical reaction between a conjugated diene and a substituted alkene, commonly termed the dienophile...
62 KB (7,092 words) - 16:10, 26 September 2024
The retro-Diels–Alder reaction (rDA reaction) is the reverse of the Diels–Alder (DA) reaction, a [4+2] cycloelimination. It involves the formation of...
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six-membered ring are formed. It is related to the Diels–Alder reaction, but unlike the Diels–Alder (or DA) reaction, the DAINV is a cycloaddition between an electron-rich...
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Cycloaddition (redirect from Retro-cycloaddition)
electron-demand Diels–Alder reaction, Hexadehydro Diels-Alder reaction and the related alkyne trimerisation. The reaction can also be run in reverse in the retro-Diels–Alder...
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In organic chemistry, the hexadehydro-Diels–Alder (HDDA) reaction is an organic chemical reaction between a diyne (2 alkyne functional groups arranged...
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Again, bond migration is possible. Cyclohexenes often undergo retro Diels-Alder reactions. Similar to alkenes, alkynes often show strong molecular ion...
24 KB (2,827 words) - 18:35, 11 December 2023
Click chemistry (redirect from Click reaction)
referred to simply as Click reactions Thiol-ene reaction Diels-Alder reaction and inverse electron demand Diels-Alder reaction [4+1] cycloadditions between...
48 KB (5,450 words) - 20:27, 26 August 2024
calculated activation barriers for the 5 → 6 isomerization via the retro-Diels–Alder reaction of 5 followed by the intramolecular [4+2]-cycloaddition in the...
21 KB (2,751 words) - 02:06, 9 November 2023
importance as a reagent in Diels-Alder reactions. It reacts with norbornadiene in a sequence of one DA reaction and two retro-DA reactions to cyclopentadiene...
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Butadiene (redirect from Ostromyslenskii reaction)
generation from nongaseous precursors. It can be produced by the retro-Diels-Alder reaction of cyclohexene. Sulfolene is a convenient solid storable source...
31 KB (3,158 words) - 07:17, 16 July 2024
Anthraquinone (section Reactions)
was pioneered by BASF. It also arises via the Rickert–Alder reaction, a retro-Diels–Alder reaction. Hydrogenation gives dihydroanthraquinone (anthrahydroquinone)...
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ethylene in a retro-Diels–Alder reaction. Compared to the compound on the right (which, lacking an alkene group, is unable to give this reaction) the bridgehead...
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that have reacted in a Diels-Alder reaction to give the product. Upon heating, it "cracks" (undergoes a retro-Diels-Alder reaction) to give identical monomers:...
13 KB (1,365 words) - 12:32, 29 September 2024
based on reversible reactions, and the most widely used reaction scheme is based on Diels-Alder (DA) and retro-Diels-Alder (rDA) reactions. Another strategy...
100 KB (12,018 words) - 01:53, 24 September 2024
Bioorthogonal chemistry (category Biochemical reactions)
is the reaction of a trans-cyclooctene and an s-tetrazine in an inverse-demand Diels Alder reaction followed by a retro-Diels Alder reaction to eliminate...
44 KB (5,098 words) - 05:29, 19 February 2024
organic chemistry, the ene reaction (also known as the Alder-ene reaction by its discoverer Kurt Alder in 1943) is a chemical reaction between an alkene with...
27 KB (3,345 words) - 20:30, 22 July 2024
a cyclic molecule. An important example of cycloaddition reaction is the Diels–Alder reaction (the so-called [4+2] cycloaddition) between a conjugated...
66 KB (8,031 words) - 09:58, 12 July 2024
can also be synthesized via a Diels Alder and retro-Diels Alder reaction: The starting material of the above reaction can be generated through the Flash...
13 KB (1,221 words) - 02:19, 16 May 2024
Dicyclopentadiene (section Reactions)
dicyclopentadiene undergoes a retro-Diels–Alder reaction at an appreciable rate to yield cyclopentadiene. The reaction is reversible and at room temperature...
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which is converted to an epoxide. The epoxide then undergoes a retro-Diels–Alder reaction, forming 1,4-dioxin and regenerating maleic anhydride. The word...
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Singlet oxygen (section Reactions)
uses a reaction of hydrogen peroxide with sodium hypochlorite in aqueous solution: H2O2 + NaOCl → O2(1Δg) + NaCl + H2O A retro-Diels Alder reaction of the...
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analysis, a method for ordination in statistics Retro-Diels–Alder reaction (rDA), a chemical reaction Research and Development Array, a cosmic ray detector...
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both depictions are still formally correct. In the case of the Diels-Alder reaction shown below, resonance arguments make clear the direction of polarization...
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was observed, in situ retro Diels-Alder and subsequent entry into path A was excluded. The metal-mediated retro Diels-Alder reaction suggests a general approach...
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Disulfur monoxide (section Reactions)
(28 July 2004). "Reversible disulfur monoxide (S2O)-forming retro-Diels–Alder reaction. disproportionation of S2O to trithio-ozone (S3) and sulfur dioxide...
14 KB (1,361 words) - 22:05, 17 June 2024
stacking. Just as in other fullerene reactions like the Bingel reaction or Diels-Alder reactions this reaction can be reversed. A thermal cycloelimination...
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Oxanorbornadiene (section Reactions with azides)
onto either of the two olefins, followed by a retro-Diels–Alder reaction (a cycloelimination reaction) to form 1,2,3-triazoles and furans. The intermediate...
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Cracking (chemistry) (category Organic reactions)
laboratory conditions. More common examples of cracking reactions involve retro-Diels–Alder reactions. Illustrative is the thermal cracking of dicyclopentadiene...
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g. At temperatures above 400 °C, both vinyldithiins undergo retro-Diels-Alder reactions and regenerate the thioacrolein 3. Vinyldithiins have been investigated...
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Sulfolene (section Diels-Alder reactions)
dienophile and forms the corresponding Diels-Alder adduct. As early as 1938, Kurt Alder and co-workers reported Diels-Alder adducts from the isomeric 2-sulfolene...
17 KB (1,848 words) - 03:18, 18 September 2024