化学合成。
化学合成
合成路线 1(1. 合成:3480-11-3)
产率:56%
合成条件:With N-Bromosuccinimide In DMF (N,N-dimethyl-formamide) at 0℃;
实验步骤:将3g(18mmol)的2'-联噻吩和50mL的DMF置于250mL的2颈圆底烧瓶中并搅拌。 在冰浴中向混合物中滴加3.2g(18mmol)N-溴代琥珀酰亚胺(NBS)在10mL DMF中的溶液。 反应完成后,用二氯甲烷萃取反应产物,用甲醇(MeOH)重结晶,得到2.5g浅黄色固体化合物,产率为56%。 该中间体(1)通过NMR鉴定。 结果如下。 1HNMR(CDCl3 400MHz):δ= 6.91(1H,d),6.96(1H,d),7.00(1H,dd),7.22(1H)
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