Nucleophilic Substitution Reaction of Amines with 3-Bromo-4-nitropyridine (and 2-Nitropyridine): A New Nitro-group Migration
作者:Jiangchao Yao、Paul R. Blake、Ji Yang
DOI:10.3987/com-05-10455
日期:——
On the reaction 3 -bromo-4-nitropyridine with amine, three in stead of two expected products are separated. 2D NMR spectral data indicate the major product was an unexpected nitro-group migration product. To explore the rearrangement mechanism, a systematic study with various solvents and bases was undertaken. Results obtained indicate that nitro-group migration occurs in polar aprotic solvents; while expected nucleophilic substitution took place under all tested conditions.