Click and bio-orthogonal reactions are dominated by cycloaddition reactions in general and
1, 3-dipolar cycloadditions in particular. Among the dipoles routinely used for click chemistry …

Type A mesoionic compounds are of particular interest due to their participation in
synthetically useful 1, 3-dipolar cycloaddition reactions. This review covers the chemistry of …

The geometries, stabilities, and 1, 3-dipolar cycloaddition reactivities of 24 mesoionic
azomethine ylides and imines were investigated using density functional theory calculations …

MP2/aug′-cc-pVTZ calculations have been performed in search of complexes, molecules,
and transition structures on the HN (CH) SX: CO2 potential energy surfaces, for X= F, Cl, NC …

(Imidazolium‐1‐yl) phenolates are conjugated heterocyclic mesomeric betaines in
tautomeric equilibrium with the corresponding N‐heterocyclic carbenes (NHCs), 3‐(2 …

The sydnone imines (5-benzoylimino)-3-(2-methoxyphenyl)-sydnone imine and
molsidomine were deprotonated at C4 to give sydnone imine anions which can be …

Sydnone imines were deprotonated with lithium bis (trimethylsilyl) amide at the C4 position
to give the corresponding sydnone imine anions as lithium adducts. These can be …

1, 2, 4-Triazoline-3, 5-diones (TADs) are versatile reagents and have found widespread
adoption in chemical science. Despite their remarkable reactivity toward a wide array of …

The anion of N-phenylsydnone, which can be generated on treatment of N-phenylsydnone
with cyanomethyllithium without decomposition, can be represented as tripolar zwitterionic …

6-Chloropurine and 2, 6-dichloropurine were reacted with N1-substituted imidazoles to give
purin-6-yl substituted imidazolium salts, respectively. Deprotonation of the 1 …