91813-36-4Relevant academic research and scientific papers
Liebeskind-Srogl-type cross-coupling reaction of azole-2-thiones with triarylbismuthines: Synthesis of 2-arylazoles
Murata, Yuki,Terazoe, Aki,Kiba, Misato,Kitamura, Yuki,Matsumura, Mio,Yasuike, Shuji
, (2020)
Liebeskind-Srogl-type C(HetAr)–C(Ar) bond formation using trivalent organobismuth compounds as a new class of arylating reagents is described. The reaction of benzazole-2-thiones with triarylbismuthines in the presence of 10 mol% Pd(dba)2 and 2.0 equiv. Cu(OAc)2 at 80 °C affords 2-arylbenzothiazoles, benzoxazoles, and N-methyl benzimidazole in moderate-to-high yield. The reaction is sensitive to the electronic nature of triarylbismuthines: compounds bearing an electron-withdrawing group on the phenyl ring showed higher reactivity than those having an electron-donating group.
A single-step preparation of thiazolo[5,4-b]pyridine- and thiazolo[5,4-c]pyridine derivatives from chloronitropyridines and thioamides, or thioureas
Sahasrabudhe, Kiran P.,Estiarte, M. Angels,Tan, Darlene,Zipfel, Sheila,Cox, Matthew,O'Mahony, Donogh J. R.,Edwards, William T.,Duncton, Matthew A. J.
experimental part, p. 1125 - 1131 (2010/03/01)
(Chemical Equation Presented) A one-step synthesis of thiazolo[5,4-b] pyridines from an appropriately substituted chloronitropyridine and thioamide, or thiourea, is presented. In particular, the reaction was used to prepare a large number of 6-nitrothiazo
Nouvelle methode de synthese de thiazolopyridines
Couture, Axel,Grandclaudon, Pierre,Huguerre, Eric
, p. 1765 - 1770 (2007/10/02)
It has been established that the direct condensation between aromatic and aliphatic thioesters and the variously generated anion of aminochloropyridines represents the best method for the synthesis of thiazolopyridines.The transient thioamides, sometimes isolated, can be easily converted chemically or photochemically into the desired fused heterocycles.
2-ARYL-OXAZOLO- AND THIAZOLOPYRIDINES. SYNTHESIS VIA CYCLIZATION OF N-(2-CHLORO-3-PYRIDINYL)ARYLAMIDES AND THIOAMIDES
Couture, Axel,Grandclaudon, Pierre
, p. 1383 - 1385 (2007/10/02)
Chloropyridinylenamides can by easily converted into oxazolo- and thiazolo pyridines by treatment with polyphosphoric acid and Lawesson reagent respectively.
