18929-58-3Relevant academic research and scientific papers
Strain-Promoted 1,3-Dithiolium-4-olates–Alkyne Cycloaddition
Kumar, Ramar Arun,Pattanayak, Manas R.,Yen-Pon, Expédite,Eliyan, Jijy,Porte, Karine,Bernard, Sabrina,Riomet, Margaux,Thuéry, Pierre,Audisio, Davide,Taran, Frédéric
, p. 14544 - 14548 (2019/09/17)
Reported here is the reactivity of mesoionic 1,3-dithiolium-4-olates towards strained alkynes, leading to thiophene cycloaddition products. In the process, the potential of these dipoles towards orthogonal reaction with azides, allowing efficient double ligation reactions, was discovered. A versatile process to access benzo[c]thiophenes, in an unprecedented divergent fashion, was developed and provides a new entry to unconventional polyaromatic thiophenes.
Non-classical S-Heteroacenes with o-Quinoidal Conjugation and Open-Shell Diradical Character
Shi, Xueliang,Gopalakrishna, Tullimilli Y.,Wang, Qing,Chi, Chunyan
, p. 8525 - 8531 (2017/06/28)
A series of non-classical S-heteroacenes were synthesized and exhibited intriguing physical properties and chemical reactivities that are very different from classical acenes. X-ray crystallographic analyses revealed that all acenothiophene derivatives Ph-AT-1–Ph-AT-3 had an o-quinoidal π-conjugation with large bond-length alternation, whereas the acenodithiophene derivative Ph-ADT-3 easily dimerized or reacted with oxygen to form a peroxy-bridged dimer. The long acenothiophene Ph-AT-4 was also highly reactive. The origin of these unique properties was investigated carefully by both experiments and theoretical calculations. The high reactivity of the long non-classical S-heteroacenes can be explained by their intrinsic open-shell diradical character as well as the o-quinoidal conjugation.
Synthesis and characterization of naphth-annelated thiophene analogs
Clement, J. Arul,Mohanakrishnan, Arasambattu K.
experimental part, p. 2340 - 2350 (2010/06/12)
Synthesis of symmetrical and unsymmetrical naphth-annelated thienyl heterocycles has been achieved via thionation of hydroxyketones/diketones using Lawesson's reagent. Photophysical studies of 1,3-disubstituted naphtho[c]thiophene analogs are presented. Electro-oxidative behavior of these naphtha-annelated thiophenes are investigated using cyclic voltammeter.
