5-acetyl-N-[3-(dimethylamino)-2,2-dimethylpropyl]-2-thiophenecarboxamide 、
N,N-二甲基甲酰胺二甲基缩醛 以gave N-[3-(dimethylamino)-2,2-dimethylpropyl]-5-[(2E)-3-(dimethylamino)-2-propenoyl]-2-thiophenecarboxamide (3.25 g) as a yellow solid的产率得到N-[3-(dimethylamino)-2,2-dimethylpropyl]-5-[(2E)-3-(dimethylamino)-2-propenoyl]-2-thiophenecarboxamide