Figure 1
Picture of professor Rolf Huisgen
33 https://www.chemistryviews.org/details/ezine/11230823/Rolf_Huisgen_1920_2020.html?utm_source=dlvr.it&utm_medium=twitter, accessed on September, 2020.
https://www.chemistryviews.org/details/e...
Figure 2
Types of pericyclic reactions
Scheme 1
General scheme of 1,3-dipolar reactions
Scheme 2
Possible orbitals interaction in the transition state of an azide-alkene 1,3-dipolar cycloaddition
Scheme 3
a) Example of a nitrone-alkene 1,3-dipolar cycloaddition reaction, b) representation of the frontier molecular orbitals involved in the reaction and c) exo and endo transient states involved in the process
Scheme 4
Preparation of 1,2,3-triazoles from azides and a) symmetrical and b) non-symmetrical alkynes
Scheme 5
Catalytic cycle for the formation of 1,4-disubstituted-1,2,3-triazoles
Scheme 6
Alternative catalytic cycle for the copper-catalyzed formation of 1,4-disubstituted-1,2,3-triazoles
Scheme 7
Synthesis of 1,5-disubstituted-1,2,3-triazoles using Cp*RuCl(PPh3)2 as catalyst
Scheme 8
Synthesis of several naphthoquinone-1,2,3-triazole hybrids with promising biological activity using CuAAC as the key step
Scheme 9
Rhodium-catalyzed cycloaddition between azides and internal ynamides for the synthesis of 5‑amino-triazoles
Scheme 10
Iridium-catalyzed cycloaddition between 1-alkynyltriazenes and benzyl azide for the synthesis of functionalized 1,4,5-trisubstituted-1,2,3-triazoles 51
Scheme 11
Strain-promoted 1,3-dipolar cycloaddition between azides and cyclooctine derivatives
Scheme 12
Preparation of 1,2,3-triazoles 60 from enols ethers and azides
Scheme 13
Synthesis of substituted 1,2,3-triazoles 46 through TBAF-catalyzed 1,3-DC
Scheme 14
Catalyst-free synthesis of novel naphthotriazole derivatives
Scheme 15
DBU-catalyzed synthesis of fused 1,2,3-triazoles 51 from cyclic 1,3-dicarbonyl compounds and organic azides
Scheme 16
Palladium-catalyzed synthesis of bicyclic 1,2,3-triazole derivatives 57
Scheme 17
1,3-Dipolar cycloaddition reaction of ethyl cyanide with aryl azides followed by Dimroth rearrangement
Scheme 18
Synthesis of 1-(1,5-diaryl-1,10bdihydropyrrolo [1,2-a][1,2,4]triazolo[3,4-c] pyrazin-3-yl) ethanones from 3-arylpyrrolo[1,2-a]pyrazines and nitrilimines
Scheme 19
1,3-Dipolar cycloaddition reaction of azomethine imines with alkynes and maleimides
Scheme 20
Synthesis of 5-amino-pyrazoles from hydrazonoyl chlorides and propanenitriles
Scheme 21
Synthesis of pyrazolo [1,5-c]quinazolines from 3-ylideneoxindoles and tosyldiazomethane
Scheme 22
Synthesis of carboxylic tetrazoles from arenediazonium salts and diazoacetates
Scheme 23
Synthesis of 3,4- and 3,5-disubstituted isoxazoles using Cu, Ru and NHC catalysts
Scheme 24
Synthesis of isoxazolines from β-fluoroalkyl-vinyl 2-pyridylsulfones and nitrile oxides generated in situ
Scheme 25
Synthesis of 1,2,4-oxadiazole derivatives from alkynes and nitriles in the presence of iron(III) nitrate
Scheme 26
Mechanochemical synthesis of N-methyl-C-(2-furyl) nitrone and its use in the synthesis of isoxazolidine and isoxazoline derivatives
Scheme 27
Synthesis of 1,2,4,5-tetrasubstituted imidazoles
Scheme 28
Synthesis of 1,3-diazabicyclo [3.1.0] hexanes
Scheme 29
Synthesis of thiazole-substituted α-hydroxy carbonyls from thiazole N-oxide and olefins
Scheme 30
Synthesis of fused heterocycles from isatins, aminoacids and Baylis-Hillman-type olefins
Scheme 31
Enantioselective synthesis of spiro-[butyrolactone-pyrrolidine]
Scheme 32
Synthesis of indole-fused five-membered rings from nitroindoles and allenoates
Scheme 33
1,3-DC reaction between in situ-generated carbonyl ylides and alkenes