Corrigendum to ‘HX-DMSO: A novel liquid halogenating system for synthesis of 2-aminothiazoles via Csp3 H bond functionalization’ [J. Mol. Liq., 255 (2018) 76–79]

Bromine‐Mediated C‐S Bond Formation: Synthesis of Thiazoles from α‐Methylene Ketones by Using Oxone Oxidative System

“…Oxone (2KHSO 5 , KHSO 4 , K 2 SO 4 ), a potassium triple salt containing potassium peroxy monosulfate, is an effective oxidant. A series of salts, such as NaCl, NaBr, NaI, KCl, KBr, KI, NH 4 Cl and NH 4 Br were screened (Table 1, entries [13][14][15][16][17][18][19]. NaBr and KBr were proved to be the most appropriate salt for this reaction, providing 3 a in 97 % and 96 % yield respectively (Table 1, entries 10, 16).…”

“…Over recent years, a series of oxidative systems, such as HX/DMSO [16] , KI/NH 4 NO 3 /H 2 SO 4 /O 2 [17] , I 2 /PTSA/O 2 /DMSO [18] and CuCl 2 /H 2 O [19] , have been disclosed. Particularly, Nama's group successfully realized the a ‐bromination of various ketones by employed NH 4 Br/Oxone system, Which was proved to be a highly efficient, environmentally safe and economic process [20] .…”

“…Multifarious halogenating reagents, including Br 2 [11] , NBS [12] , CBr 4 [13] , I 2 [14] , NIS [15] et al, have been employed in situ α-halogenation strategies for the synthesis of thiazoles (Scheme 2). Over recent years, a series of oxidative systems, such as HX/ DMSO [16] , KI/NH 4 NO 3 /H 2 SO 4 /O 2 [17] , I 2 /PTSA/O 2 /DMSO [18] and CuCl 2 /H 2 O [19] , have been disclosed. Particularly, Nama's group successfully realized the a-bromination of various ketones by employed NH 4 Br/Oxone system, Which was proved to be a highly efficient, environmentally safe and economic process [20] .…”

Bromide Oxidation: A Safe Strategy for Electrophilic Brominations

“…BDMSB 44 generated in situ has been used to brominate electron‐rich arenes [130a,132a,133] and heteroarenes, [132a,133] ketones, [134] enaminones, [132c] and double [130b,134] and triple bonds [134] . It was also used to efficiently brominate methyl(ene)ketones, which then cascaded into 2‐aminothiazoles in the presence of thiourea [132b] . In addition, Pd(II)‐catalysis enabled the efficient synthesis of 2‐(2‐bromophenyl)pyridines and similar molecules [135] …”

Visible-light-induced C–S bond formation in the synthesis of 2,4-disubstituted thiazoles through cascade difunctionalization of acetophenone: a greener approach

“…Alkyl, aryl, or heterocyclic substituents can be added to any of the 2-, 4-, or 5-position of the thiazole ring by carefully selecting the reactants. 38,39 In recent years, a series of oxidative systems, such as HX/ DMSO, 40 43 and (CH 3 ) 3 SiX-KNO 3 , 33 have been disclosed. In 2022, Lu and co-workers presented 2,4-diphenyl thiazole synthesis by the reaction of sulfoxonium ylide and thiobenzamide under the catalysis of palladium (Scheme 1A, i).…”