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The influence of the Vilsmeier formylation reaction, the immediate Grignard reaction, the mediate Grignard reaction and the solvents on the synthesis of 2,8-diformyldibenzhothiophene was also investigated.

探索了Vilsmeier甲酰化、直接格氏试剂法、间接格氏试剂法以及溶剂对合成2，8-二甲酰基二苯并噻吩的影响。

The volume ratio of furaldehyde to acetic anhydride is 1∶2; the mole ratio of furaldehyde with anhydrous potassium carbonate is 1.00∶0.54. The best phase transfer catalyst is PEG1000, the mass ratio of PEG1000 with furaldehyde is 4.3%, the reaction time is 11 min, the reaction power of microwave is 260 W. The yield ofα-furanacrylicacid is up to 72.3% under these reaction conditions.

研究结果表明：在微波辐射功率为260 W、微波反应时间为11 min、以聚乙二醇1 000(PEG1000)为相转移催化剂，糠醛与乙酐的体积比为1∶2，糠醛与无水碳酸钾的量比为1.00∶0.55时，α-呋喃丙烯酸的产率为72.3%。

The results showed that the reaction activity between glycinin (7S subunit) and maltodextrin was high, and the reaction proceeds quantitatively regardless of the variation of protein and polysaccharide mass ratio. The molecular properties of the formed conjugates are also highly uniform. The reaction activity between β-conglycinin (11S subunit) and maltodextrin is relatively lower Compared to that of glycinin, and the molecular properties of these conjugates are affected by the variation of the R values.

电泳分析表明：7S亚基与麦芽糊精的反应性较高，而且在文中所研究的蛋白质与多糖质量比的范围内，7S亚基都能与麦芽糊精发生定量的共聚合反应，形成分子特性高度一致的共聚物；而11S亚基与麦芽糊精间的反应性较低，共聚物的分子特性受蛋白质与多糖质量比的影响。

The process does not depends on catalytic hydrogenization method, has simple reaction condition, high reactant yield all over 75%, can use TLC to track the whole reaction process, and is more suitable to the transformation of function group in the organic synthesis field as the result of N-Boc or N-Cbz derivative is easy to loss protective reaction, which has spreading application prospect.

该方法不依赖于催化氢化方法，反应条件简单，反应产物产率高，均在75％以上，反应过程可用TLC进行跟踪，且由于N-Boc或N-Cbz衍生物更易发生去保护反应，在有机合成领域更适宜于官能团的转化，具有广阔的应用前景。

In addition, ioding was found to be an efficient catalyst for the imino Diels-Alder reaction of N-arylimine and enol ethers and the reaction provided tertrahydroqinolines in good yields. One pot synthesis of tetrahydroqinolines from aldehyde, aniline and enol ethers was also achieved using iodine as the catalyst. The chemical yield of the"one pot"reaction was comparable with that obtained using preformed N-arylimine.

此外我们也发现碘能够有效地催化N-芳基亚胺与烯醇醚的Diels-Alder反应，以很高的化学收率得到了四氢喹啉衍生物，并且发现碘也能够直接催化芳香醛、苯胺、烯醇醚的三组分&一锅&反应，获得的化学产率与使用预制的N-芳基亚胺相当。

The results show that temperature does not have a significant impact on derivatization reaction; the derivatives are rapid degraded in sun light; the derivatization reaction is inhibited when the derivatization reagent is at high concentration; the reaction to produce the fluorescent derivatives is finished in 30 min, and the derivatives are stable for about 8 h at normal temperature and lightless.

研究结果表明，环境温度对衍生反应影响不显著；衍生反应对太阳光线敏感，其机理是阿维菌素衍生产物易快速发生光解；高浓度的衍生试剂对反应表现一定抑制作用；衍生反应在30min左右达到峰值，其产物在室温、避光条件下8h内保持稳定。

Detection results showed samples VA2, VA7 and VA8 from Malvastrum coromandelianum had weak reaction with MAb SCR18, and samples X2 from Siegesbeckia orientalis had weak reaction with MAb SCR18 and SCR106, while other samples had no reaction with MAbs.

用双生病毒兼并引物PA、PB对杂草样本进行特异性的PCR检测，结果发现仅有赛葵样本VA2、VA7、VA8和稀硷样本X2出现约500bp条带，说明这些杂草上存在双生病毒。

For example,the addition reaction with small molecular,the metathetical reaction with alkynes and Wittig reaction to prepare high-valent transtion-metal allenylidene complexes.

对于化合物11，详细研究了其与小分子加成反应、炔烃复分解反应以及通过Wittig反应制备高价态过渡金属丙二烯基卡宾化合物。

The results showed high class PbSt2 could be synthesized by this new saponifying process.Compared with metathetical process,the reaction time shortened,liquid-solid ratio and moisture content of filter cake decreased.Powder product could be prepared by one-step process,and particle product by two-step process.For the optimum processing conditions,the reaction temperature and time for one-step process were 65℃ and 10min,the amount of alkali added in the first step was 50%;reaction temperture and time were 65℃ and 10min for the two-step process.

结果表明，用皂化法工艺可得到优等品PbSt2，较复分解工艺，反应时间缩短、液-固比降低、滤饼湿含量比减小，一步式工艺得到粉状产品，二步式工艺得到颗粒状产品；最佳工艺条件为：一步式工艺反应温度65℃，反应时间10min；二步式工艺第一步的加碱量比50%，反应温度65℃，反应时间10min。

Main connections are methenyl ether linkage and methenyl. From the end of heat preservation to the end of whole reaction, main reaction was polycondensation. In general, there were three types reaction among melamine modified UF resin, urea-formaldehyde system, melamine-formaldehyde system and melamine-urea-formaldehyde system.

保温反应结束直到整个反应结束，缩聚反应为主要反应类型，三聚氰胺改性脲醛树脂中存在着3种反应体系：尿素甲醛的反应体系、三聚氰胺甲醛反应体系和三聚氰铵尿素甲醛共缩合反应体系。

As of Tuesday, Google's results were still censored in China.

截至周二，谷歌的搜索结果仍受中国审查。

In order to make the positive action increase and negative one decrease, the sub-forces of the social factors must be adjusted to form a centripetal force.

在这一过程中，人的主体性发挥是社会有机体健康发展的灵魂。