“二甲”造句

再溴代得到2-溴 -4,5-二甲氧基苯甲醛,收率為91.9%,并分析溴代過程中甲?；泥徫恍颁宕a(chǎn)物的穩(wěn)定性.
This product with Br 2 was obtained 2 - bromo - 4,5 - hydroxymethoxybenzaldehyde through bromination.

這些陰離子受體包括橋聯(lián)二吡咯柄型二茂鐵 、 基于聯(lián)吡咯的索烴、附加有離子基團的吡咯酰胺、吡咯-2, 5- 二甲酰胺和吡咯 -2,5-二乙酰胺.
These receptors include bridged dipyrrole ansa - ferrocene, bipyrrole - based catenanes , guanidinium - appended amidopyrroles, 2,5 - diamidopyrroles and pyrrole - 2,5 - diacetamides.

使用二異丁基-二甲氧基硅烷, DQ催化劑的氫調敏感性更好.
With di - iso - butyl dimethoxy DIBS, DQ catalyst was more sensitive to hydrogen regulation.

• #二甲