例如,水、二甲基亚砜、二甲基甲醛和二甲基乙酰胺。
For example, water, dimethyl sulfoxide, dimethylformaldehyde, and dimethylacetamide are used.
易溶于氯仿、二甲基乙酰胺等多种极性非质子有机溶剂。
It is dissolved in many kinds of dipolar aprotic organic solvents such as NMP, DMAc, DMSO, sulfolane.
选用N,N -二甲基乙酰胺作为反应溶剂后缩短反应时间的同时,得到的盖草能收率高,光学纯度好。
The n, N-dimethyl acetamide is used as the reaction solvent, therefore, the reaction time is shortened, and simultaneously, the obtained Gallant-Super has high yield rate and good optical purity.
本文以聚矾和磺化聚砜共混物为膜材料,二甲基乙酰胺为溶剂,聚乙烯吡咯啉酮和邻苯二甲酸二甲酯为添加剂配制纺丝液,纺制外压中空纤维超滤膜。
This paper reported the preparation of hollow fiber UF membrane, using PS and SPS as membrane spinning materials, DMA as solvent, PVPand dimethyl phthalate as additives.
以1,3-二甲基金刚烷为原料,经溴化、乙腈和硫酸的作用下乙酰胺基化、水解、成盐等反应及改进的后处理方法得到盐酸美金刚,总收率6 7。8%。
Memantine hydrochloride was synthesized from 1,3 dimethyladamantane by bromination, acetamidation with acetonitrile in sulfuric acid and hydrolysis with an overall yield of 67.8%.
以1,3-二甲基金刚烷为原料,经溴化、乙腈和硫酸的作用下乙酰胺基化、水解、成盐等反应及改进的后处理方法得到盐酸美金刚,总收率6 7。8%。
Memantine hydrochloride was synthesized from 1,3 dimethyladamantane by bromination, acetamidation with acetonitrile in sulfuric acid and hydrolysis with an overall yield of 67.8%.
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