Microwave-assisted generation and reactivity of aza- and diazafulvenium methides: heterocycles via pericyclic reactions [PDF]
, 2008 Azafulvenium methides and diazafulvenium methides have been generated under microwave irradiation from 2,2-dioxo-1H,3H-pyrrolo[1,2-c]thiazoles and 2,2-dioxo-1H,3H-pyrazolo[1,5-c]thiazoles, respectively.
Melo, Teresa M. V. D. Pinho e +1 more
core +1 more source
Formation of Pyrazol-1,3,4-Thiadiazoles through 1,3-Dipolar Cycloadditions of 3-Thioxo-[1,2,4]-Triazepin-5-one with Nitrilimines: An Experimental and Computational study [PDF]
, 2009 In this work the results of experimental and computational study of the title compounds and some ancillary compounds are reported. Two bicyclic pyrazol-1,3,4-thiadiazole derivatives were synthesized by reaction between 6-dimethylaminomethylene-3-thioxo-
Azzouzi, S. +7 more
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An Overlooked Pathway in 1,3-Dipolar Cycloadditions of Diazoalkanes with Enamines. [PDF]
Angew Chem Int Ed Engl, 2022 Li L +5 more
europepmc +1 more source
Photocatalytic (3 + 2) dipolar cycloadditions of aziridines driven by visible-light. [PDF]
Chem Sci, 2023 Mazzarella D +3 more
europepmc +1 more source
Bioorthogonal metal-free click-ligation of cRGD-pentapeptide to alginate [PDF]
, 2012 Click reactions have become very common and powerful ligation techniques, of which 1,3-dipolar cycloadditions have most frequently been employed. Since metal-mediated cycloadditions are incompatible in biomedical applications due to toxicity issues ...
Dräger, Gerald +2 more
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Beilstein Journal of Organic Chemistry, 2017 Trimethylsilyldiazomethane (TMS-CHN2) reacts readily with hetaryl thioketones to give sterically crowded 2-trimethylsilyl-4,4,5,5-tetrahetaryl-1,3-dithiolanes with complete regioselectivity at −75 °C as well as at rt.
Grzegorz Mlostoń +3 more
doaj +1 more source
SuFExable NH-Pyrazoles via 1,3-Dipolar Cycloadditions of Diazo Compounds with Bromoethenylsulfonyl Fluoride. [PDF]
J Org Chem, 2022 Yamanushkin P +3 more
europepmc +1 more source
Stereoselective Intramolecular Azide 1,3-Dipolar Cycloaddition
HETEROCYCLES, 2003 Ethyl (E)-7-azido-6-[bis(tert-butoxycarbonyl)amino]-2-heptenoate undergoes a stereoselective intramolecular azide 1,3-dipolar cycloaddition leading to a stable triazoline. The configuration and the conformation of the triazoline obtained were determined by spectroscopic data and confirmed by molecular mechanics calculations.
Markidis, T., Mikros, E., Kokotos, G.
openaire +2 more sources
1,3‐Dipolar Cycloaddition of Dipolar Reagents to Bis(styryl) Sulfones.
ChemInform, 2002 AbstractFor Abstract see ChemInform Abstract in Full Text.
V. Padmavathi +4 more
openaire +1 more source
A Novel Cycloaddition Reaction of Thermally Generated Sulfenes
CHIMIA, 1992 The highly strained ?-sultine 4, resulting from the addition of SO2 to benzobenzvalene, is shown to undergo a thermal cycloreversion which gives 1H-indene-1-thiocarbaldehyde dioxide (6) as an intermediate and subsequently 1H-indene-1 ...
Ulrich Burger +3 more
doaj +2 more sources