《The direct C4-arylation of 3,5-dimethylisoxazole with aryl bromides catalyzed by imidazolidin-2-ylidene based palladium-PEPPSI complexes》 was published in Inorganica Chimica Acta in 2020. These research results belong to Kaloglu, Murat; Ozdemir, Ismail. HPLC of Formula: 2042-37-7 The article mentions the following:
In this study, the synthesis and characterization of four new imidazolinium salts as carbene precursors and their corresponding four new PEPPSI-type (PEPPSI = Pyridine Enhanced Precatalyst Preparation Stabilization and Initiation) palladium complexes I (R = 4-Me, 2,4,6-tri-Me, 2,3,4,5,6-pentamethyl, 4-tert-butyl) were reported. The catalytic activities of all palladium complexes I were evaluated in the direct C4-arylation of 3,5-dimethylisoxazole with para-substituted aryl bromides 4-R1C6H4Br (R1 = H, Me, CHO, F, etc.), ortho-substituted aryl bromides 2-R2C6H4Br (R2 = Me, CN) and heteroaryl bromides R3Br (R3 = quinolin-3-yl, thiophen-2-yl). A range of functional groups such as methoxy, acetyl, formyl, fluoro, trifluoromethyl, nitrile or tert-Bu on the aryl bromides were successfully tolerated, and good yields were generally obtained in presence of 1 mol% catalyst loading at 120°C. In the experimental materials used by the author, we found 2-Bromobenzonitrile(cas: 2042-37-7HPLC of Formula: 2042-37-7)
2-Bromobenzonitrile(cas: 2042-37-7) is a precursor to the quinazolinones, a class of drugs used to treat autoimmune diseases and coronary heart disease. In addition, 2-bromobenzonitrile can be used for the Suzuki coupling reaction.HPLC of Formula: 2042-37-7
Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts