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The page "(4 3) cycloaddition" does not exist. You can create a draft and submit it for review or request that a redirect be created, but consider checking the search results below to see whether the topic is already covered.

Cycloaddition
standard Diels-Alder reaction is a (4 + 2)-cycloaddition, the 1,3-dipolar cycloaddition is a (3 + 2)-cycloaddition and cyclopropanation of a carbene with...

12 KB (1,317 words) - 23:37, 6 December 2024
(4+3) cycloaddition
A (4+3) cycloaddition is a cycloaddition between a four-atom π-system and a three-atom π-system to form a seven-membered ring. Allyl or oxyallyl cations...

10 KB (1,268 words) - 11:59, 1 December 2024
6+4 Cycloaddition
[6+4] Cycloaddition is a type of cycloaddition between a six-atom pi system and a four-atom pi system, leading to a ten-membered ring. Because this is...

9 KB (1,075 words) - 20:53, 22 July 2024
Nitrone-olefin (3+2) cycloaddition
nitrone-olefin (3+2) cycloaddition reaction is the combination of a nitrone with an alkene or alkyne to generate an isoxazoline or isoxazolidine via a (3+2) cycloaddition...

7 KB (923 words) - 22:24, 27 September 2024
Metal-centered cycloaddition reactions
A metal-centered cycloaddition is a subtype of the more general class of cycloaddition reactions. In such reactions "two or more unsaturated molecules...

10 KB (1,034 words) - 02:09, 2 August 2024
Azide-alkyne Huisgen cycloaddition
The azide-alkyne Huisgen cycloaddition is a 1,3-dipolar cycloaddition between an azide and a terminal or internal alkyne to give a 1,2,3-triazole. Rolf...

21 KB (2,639 words) - 20:31, 22 July 2024
Ketene cycloaddition
Ketene cycloadditions are the reactions of the pi system of ketenes with unsaturated compounds to provide four-membered or larger rings. [2+2], [3+2], and...

9 KB (1,180 words) - 00:32, 24 August 2024
Sulfuryl chloride
Giliane Bouchain (2002). "[4+3] Cycloaddition in Water. Synthesis of 2,4-endo,endo-Dimethyl-8-oxabicyclo[3.2.1]oct-6-en-3-one". Organic Syntheses. 79:...

11 KB (859 words) - 18:58, 12 May 2025
Perkow reaction
hexachloroacetone and triethylphosphite which is able to engage in a secondary [4+3] cycloaddition with furan through the action of the base sodium 2,2,2-trifluoroethoxide...

4 KB (437 words) - 23:45, 5 April 2023
1,3-Dipolar cycloaddition
cycloaddition is a chemical reaction between a 1,3-dipole and a dipolarophile to form a five-membered ring. The earliest 1,3-dipolar cycloadditions were...

65 KB (6,396 words) - 07:16, 24 May 2025
Scopine (category Heterocyclic compounds with 3 rings)
and 1,1,3,3-tetrabromoacetone; the reagents are combined in a [4+3] cycloaddition, followed by a diastereoselective reduction with diisobutylaluminum...

4 KB (288 words) - 03:08, 7 May 2025
Click chemistry (section Alkene and azide [3+2] cycloaddition)
as a concerted [3+2] cycloaddition to the triple bond in a cyclooctyne in the same mechanism as the Huisgen 1,3-dipolar cycloaddition. Substituents other...

48 KB (5,452 words) - 15:44, 23 May 2025
Enone–alkene cycloadditions
In organic chemistry, enone–alkene cycloadditions are a version of the [2+2] cycloaddition. This reaction involves an enone and alkene as substrates....

9 KB (1,024 words) - 13:35, 15 May 2025
4-Chlorophenyl azide
4-chlorophenyl azide are important in click chemistry. The azide reacts in a cycloaddition with alkyl-nitriles to form 1,2,3-triazoles. The use of azides is very...

7 KB (566 words) - 21:10, 23 May 2025
Reductive dehalogenation of halo ketones
ketones leads to 2-oxyallyl metal complexes, which participate in [4+3] and [3+2] cycloaddition reactions as the 2π component. 2-Oxyallyl metal intermediates...

10 KB (1,241 words) - 19:10, 27 June 2024
4+4 Photocycloaddition
The [4+4] Photocycloaddition is a cycloaddition reaction in which two unsaturated molecules connect via four atoms from each molecule (hence "4 + 4") to...

8 KB (917 words) - 11:57, 13 August 2023
Woodward–Hoffmann rules (redirect from 2+2 Cycloaddition)
(a (4+2)-cycloaddition) is [π4s + π2s]. The 1,3-dipolar cycloaddition of ozone and an olefin in the first step of ozonolysis (a (3+2)-cycloaddition) is...

93 KB (11,920 words) - 14:03, 12 December 2024
Trifluoroperacetic acid
the synthesis of scopine, a tropane alkaloid. In this approach, a [4+3] cycloaddition mediated by diiron nonacarbonyl is used to construct the bicyclic...

35 KB (3,363 words) - 14:55, 8 February 2025
Benjamin Gung
stereochemical mechanism and in the development of a Transannular [4+3] cycloaddition reaction with gold-stabilized allylic carbocations as reactive intermediate...

10 KB (1,151 words) - 22:08, 2 April 2025
Thiazole (redirect from 5,5-dimethyl thiazolidinium-4-carboxylate)
zwitterionic intermediate in a formal [2+2]cycloaddition to a cyclobutene, then to a 1,3-thiazepine in a 4-electron electrocyclic ring opening and then...

12 KB (1,151 words) - 18:44, 12 March 2025

Textbooks from Wikibooks
Structural Biochemistry/Organic Chemistry
alkene added is called dienophile. The reaction is also called a [4+2]cycloaddition. This type of reaction can still be carried out in the absence of
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