57000-63-2Relevant articles and documents
Metal-free iodine(iii)-promoted synthesis of 2,5-diaryloxazoles
Yang, Xueying,Guo, Xin,Qin, Mingda,Yuan, Xinglong,Jing, Huanwang,Chen, Baohua
supporting information, p. 3104 - 3108 (2018/05/22)
A nonmetal-catalyzed oxidative cyclization to achieve 2,5-disubstituted oxazoles from inexpensive and readily available substituted chalcone, (diacetoxyiodo)benzene (PIDA) and ammonium acetate (NH4OAc) at room temperature is described. The reaction forms a variety of 2,5-diaryloxazoles in good to excellent yields with broad substrate scope under mild conditions without the requirement of ligands and additional bases.
Iodine catalysed intramolecular C(sp3)-H functionalization: synthesis of 2,5-disubstituted oxazoles from N-arylethylamides
Samanta, Supravat,Donthiri, Ramachandra Reddy,Dinda, Milan,Adimurthy, Subbarayappa
, p. 66718 - 66722 (2015/08/24)
Iodine catalyzed synthesis of 2,5-disubstituted oxazoles from N-arylethylamides through intramolecular C(sp3)-H functionalization under metal-free conditions is described. The method is tolerable to a wide range of substrates having a variety of functional groups with moderate to good yields of the products.
Convenient one-pot synthesis of 2,5-disubstituted oxazoles via a catalytic oxidative dehydrogenation of F3CSO3H·SiO 2-DDQ/CuCl2/LiCl
Yuan, Shizhen,Li, Zhen,Xu, Ling
, p. 1405 - 1409 (2014/01/06)
A facile one-pot synthesis of 2,5-disubstituted oxazoles was developed via cyclization of aldoximes and phenylacetylene then dehydrogenation oxidation. 2,3-dichloro-5,6-dicyano-1,4-benzoquinone was studied for the selective oxidation of oxazolines using Cu2+/Li+ as catalyst and O2 as indirect oxidant. The reaction results showed that this catalyst system can effectively catalyze the oxidation of oxazolines to the corresponding oxazoles. Thus, a variety of polysubstituted oxazoles was easily synthesized in high yields by catalytic oxidation of 2,3-dichloro-5,6-dicyano-1, 4-benzoquinone/CuCl2/LiCl/O2.