91813-36-4Relevant articles and documents
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.
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.