质子性溶剂

研究发现，在质子性溶剂中1-丁烯环氧化反应活性高于非质子性溶剂，而以甲醇为溶剂H2O2转化率最高。

Epoxidation activity is better in protic solvents than that in nonprotic solvents , and the conversion of H_2O_2 is the highest using methanol as solvent .

我们采用质子性溶剂（甲基溶纤素、乙基溶纤素、异戊醇、正戊醇）对苯并类冠醚的合成方法进行了改进，使反应时间大大缩短。

We have improved the synthesis of benzo crown ethers in protic solvents ( methyl cellosolve , ethyl cellosolve , iso-pentyl alcohol and pentyl alcohol ) and had the reaction times greatly decreased .

以KOH为催化剂，在极性非质子性溶剂中，以较高收率合成了反－4－苯乙烯基吡啶及其衍生物。

Trans 4 styrylpyridine and its derivatives were prepared with high yields in polar non protonic solvent with potassium hydroxide as catalyst .

PI-2不仅可以溶解于极性非质子性溶剂中，而且在许多常规溶剂中也具有优良的溶解性能。

PI-2 was soluble not only in polar aprotic solvents , but in many common solvents .

可能的解释是在高介电常数的非质子性溶剂中（如DMSO，DMF），溶剂参与了反应，促使磺酸酯发生S&O断裂，生成的~OCH2R'与酰氟作用而得酯。

A possible interpretation is that in the aprotic solvents with high dielectric constant ( such as DMSO , DMF ), the solvent molecules may participate in an initial S-O scission , followed by the attack of the resulting R '_FCH_2O on acyl fluoride to give the ester .

在非质子性溶剂，镁对频纳醇与醛和酮的还原耦合反应也有一定效果。

In aprotic solvents magnesium effects pinacol reductive coupling of aldehydes and ketones .

比如，很多具有荧光性质的分子在质子性溶剂中会发生荧光淬灭，主要原因就是溶质与溶剂分子之间氢键相互作用对体系电子激发态性质的调节作用。

For example , fluorescent molecules will be quenched in protonic solvents . The main reason is the modification effect of hydrogen bond between solute and solvent molecules .

这些反应在质子性醇溶剂与K2CO3组成的两相体系中进行更为方便，可用于吡咯烷及恶唑烷衍生物的合成。

The reactions are performed more conveniently in two phase systems consisted of alcoholic solvents and K_2CO_3 , and may be adapted for the synthesis of pyrrolidine and oxazolidine derivatives .

以双酚A和4,4′-双（3-硝基苯二甲酰亚氨基）二苯醚在非质子极性溶剂中的取代反应合成了聚醚酰亚胺（PEI），并对其结构作了鉴定。

Polyetherimide ( PEI ) was synthesized from Bisphenol A and 4 , 4 ' - bis ( 3-nitrophthalimido ) diphenyl ether by the nitro-displacement reaction in a polar aprotic solvent , and its structure was identified .

在碱金属亚硝酸盐和碳酸盐存在下，被强吸电子基团取代的硝基苯在非质子极性溶剂中能发生自身缩合反应，生成结构对称的双取代二苯醚，收率较高。

In the present of alkali nitrite and carbonate , some nitrobenzenes substituted by strongly electron withdrawing groups undergo a self condensation in an aprotic polar solvent to give symmetrical disubstituted diphenyl ethers in good yields .

该共缩聚型聚酰亚胺在非质子强极性溶剂中均具有良好的溶解性，玻璃化温度（Tg）大于250℃，10%的热分解温度（Td）为5197℃。

The copolyimide was very soluble in strong polar aprotic solvents . Its glass transition temperature was above 250 ℃ and 10 % thermal decomposition temperature was 519.7 ℃ .

DDBT与DSDA、6FDA反应得到的聚酰亚胺在非质子强极性溶剂中具有良好的溶解性。

DL / g , are observed to be soluble in strong polar solvents .

玻璃化转变温度高于300℃，热失重温度高于500℃。同时，聚合物在常用非质子有机极性溶剂中具有优良的溶解性能。

The data of DSC and TG show that the copolymers possess excellent thermal performance , glass transition temperature over 300 ℃, thermal weight loss temperature higher than 500 ℃ and superior solubility in conventional organic aprotic polar solvents .