Type A mesoionic compounds (1980–2020)

CA Ramsden, F Dumitrascu - Advances in Heterocyclic Chemistry, 2022 - Elsevier
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 …

Sydnone Methides—A Forgotten Class of Mesoionic Compounds for the Generation of Anionic N‐Heterocyclic Carbenes

S Mummel, F Lederle, EG Hübner… - Angewandte Chemie …, 2021 - Wiley Online Library
Sydnone methides are described from which only one single example has been mentioned
in the literature so far. Their deprotonation gave anions which can be formulated as π …

Sydnone Methides: Intermediates between Mesoionic Compounds and Mesoionic N‐Heterocyclic Olefins

S Mummel, F Lederle, EG Hübner… - European Journal of …, 2023 - Wiley Online Library
Sydnone methides represent an almost unknown class of mesoionic compounds which
possess exocyclic carbon substituents instead of oxygen (sydnones) or nitrogen (sydnone …

Suzuki–Miyaura cross-couplings under acidic conditions

L Pruschinski, AL Lücke, T Freese, SR Kahnert… - …, 2020 - thieme-connect.com
Suzuki–Miyaura reactions with Pd (PPh 3) 4 have been carried out using lithium N-
phenylsydnone-4-carboxylate as additive, which gave best yields at pH 5.7 in a mixture of …

Sydnonmethide–fast vergessene Mesoionen als Vorläufermoleküle von anionischen N‐heterocyclischen Carbenen

S Mummel, F Lederle, EG Hübner… - Angewandte …, 2021 - Wiley Online Library
Wir beschreiben Sydnonmethide, von denen bisher nur ein einziges Beispiel in der Literatur
erwähnt worden war. Sydnonmethide können zu Anionen deprotoniert werden, die als π …

1, 3‐Thiazolium‐4‐aminides: Syntheses and Characterization of Fluorescent Mesoionic Compounds

AT Storm, M Gjikaj, JC Namyslo… - European Journal of …, 2021 - Wiley Online Library
Abstract A series of mesoionic 1, 3‐thiazolium‐4‐aminides was synthesized starting from
thioamides and chloroacetonitrile via cyanomethylbenzimidothioates which were cyclized by …

Photoionization of stable mesoionic compounds

I Novak - Journal of Molecular Liquids, 2022 - Elsevier
The electronic structures and valence ionizations of three mesoionic compounds: 3-
methylsydnone, 3-phenylsydnone and 3-methyl-2-phenyl-1, 3, 4-thiadiazole-5-thione have …

Synthesis of 1-(2-Fluorophenyl) pyrazoles by 1, 3-Dipolar Cycloaddition of the Corresponding Sydnones

D Dumitrescu, S Shova, C Draghici, MM Popa… - Molecules, 2021 - mdpi.com
3-Arylsydnones bearing fluorine and bromine atoms on the benzene ring were synthesized
from N-nitroso-2-fluorophenylglycines and characterized by NMR spectroscopy. These were …

[PDF][PDF] The Fascinating Chemistry of Mesoionic 4-Trifluoroacetyl-1, 3-oxazolium-5-olates and Related Compounds

R Saijo, M Kawase - … : an international journal for reviews and …, 2021 - scholar.archive.org
This review illustrates the unexpected and unique transformation of mesoionic 4-
trifluoroacetyl-1, 3-oxazolium-5-olates (4-TFMK-münchnones) on treatment with different …

[PDF][PDF] SCREENING OF HETEROCYCLIC SUBSTITUTED SYDNONES FOR POTENTIAL BIOLOGICAL ACTIVITY

NO CORNELI, F Albota, C CERASELLA - Farmacia, 2018 - researchgate.net
Nowadays, the emergence of bacterial resistance to antibiotics has become a major public
health concern; therefore the development of new compounds overcoming the bacterial …