N-(4-fluorobenzyl)-3-methylthiophene-2-carboxamide 、
N-benzyl-3-methyl-2-furamide 、
N-溴代丁二酰亚胺(NBS) 以5-bromo-N-(4-fluorobenzyl)-3-methylthiophene-2-carboxamide was obtained as a colorless solid in 87% yield的产率得到5-bromo-N-(4-fluorobenzyl)-3-methylthiophene-2-carboxamide