氟化的

For developing an immunoassay for multiple residues of pyrethroid pesticides, the hapten N-2- carbanmoyl-(3"-phenoxyphenyl) methyl 3-(2"-Cldoro-3",3",3"-trifluoropropenyl)-2, 2-dimethylcyclopropane- carboxylate was synthesized from cyanohydrin and 3-(2"-Chloro-3",3",3- trifluoropropenyl)-2, 2-dimethylcyclopropanecarboxylic acid via hydrolysis and esterification. The synthesis of the hapten was foundation of preparaing anti- cyhalothrin polyclonal antibodies.

为了制备对单一拟除虫菊酯高特异性的抗体，以菊酸和氰醇为起始原料，通过水解、酯化反应合成了半抗原N-2-氨甲酰-(3-苯氧基苄基)甲基-3-(2-氯-3，3，3-三氟丙烯基)-2，2-二甲基环丙烷羧酸酯，为进一步制备抗三氟氰菊酯的特异性抗体奠定基础。

The traditional mineralizer fluorine and sulfur are replaced by basalt and slag.

矿化剂选用了玄武岩和矿渣替代了传统的氟硫矿化剂。

The initial interaction modes of pyreno[2,1-b]pyrrole and its dimeric derivative with F in MeCN can be understood as hydrogen-bonded complexes. Excess F ions promotes deprotonation of N-protons and results in the bathochromic changes in both absorption and fluorescence spectra.

实验过程中发现，在初始模式中，芘骈吡咯及双芘骈吡咯与氟离子形成氢键附合物；之后加入的氟离子，因其带有极强的碱性，将促使吡咯官能基中氮上氢进行去质子化，而造成吸收及萤光光谱的红位移现象。

Sulfonated poly are prepared by direct polymerization of biphenol A, disodium 4, 4"-difluoro-3, 3"-disulfonate-1, 1-diphenylsulfone and 1, 3-(4-difluorophenyl)benzene. The polymers are characterized with ~1H-NMR, FT-IR.

以双酚A，1，3-二(4-氟苯基)苯和4，4′-二氟-3，3′-二磺酸钠-1，1′-二苯砜采用直接缩合法合成了不同磺化度的磺酸型聚芳醚酮砜，通过FT-IR和~1H-NMR对聚合物进行了表征，证明其结构正确。

The overall yield was 43.6%.The yield of reduce of ester was increased nearly one times than the past method because of KBH4-LiCl as the reducing agent instead of NaBH4. Changing the reaction conditions of bromization, the one-way yield enhanced 30%. The yield of reduce of the bromide was added by one times by improving the process. Tefluthrin was achieved by the catalytic esterification of DCC and DMAP.

优化后工艺对四氟对苯二甲酯的还原采用了廉价高效的还原试剂KBH4-LiCl，使收率比NaBH4法提高了近一倍；对溴化反应条件进行了优化，单程收率提高了30%；对溴化物还原条件的优化，使其收率提高了近一倍；采用了催化剂DCC和DMAP合成了最终产品七氟菊酯。

Study on an efficient process for the preparation of trifloxystrobin starting from 2-methylacetophenone bypartial oxidation,esterification,reaction with methoxyamine,bromization and condensation with 3'- acetophenone oxime.

以邻甲基苯乙酮为原料，经过高锰酸钾的碱性氧化，甲醇酯化，再与甲氧基胺盐酸盐肟化后，用N-溴丁二酰亚胺溴化，最后和间三氟甲基苯乙酮肟缩合得到目标产物肟菌酯。

Methods:5Fliorouracil was added to culture medium of BGC823 gastric cancer cells and continuously cultured for 5h or 10h,then the human gastric cancer cells were stained with haematoxylin Eosin、dyed with immunohistochemical method and acid Ulead citrate,which was observed under light and electiom microscope.

目的：探讨5氟尿嘧啶对人胃癌细胞的结构和GSTπ表达的影响。方法：在人胃癌BGC823细胞株培养液中加入5氟尿嘧啶，继续培养5h或10h，然后用HE、免疫组化染色和铀铅染色。

It occurred with poor regioselectivity leading to a mixture of 3-chloro-2,6-difluoro-4-iodopyridine (14; 77%) and 3-chloro-2,6-difluoro-5-iodopyridine (15; 15%) after iodination.

It利达介导的去质子不佳导致混合区域选择性发生在3 -氯-2，6 -二氟- 4 - iodopyridine（14，77％）和3氯- 2 ，6 -二氟- 5 - iodopyridine（15； 15％）后，碘化。

The anticaries and remineralization potentiality of the slow-release fluoride tablet can control the enamel area of 96 mm2. The tablet can meet the clinical demands.

该缓释氟粘贴片体外抗龋和再矿化潜力很大，即在本实验条件下，连续给30片氟粘贴片，最大限度能控制96 mm2大小的釉面，预计能够满足临床的需要。

This is transformed into anomeric acetates 16, which is used for the synthesis of a number of 2＇, 3＇-dideoxy-2＇-trifluoromethylnuclosides via Vorbruggen glycosylation reaction. At the same time, L-2-tifluoromethyl-4-thiofuranosides 39 were also prepared from the key intermediate lactone.

从这一砌块出发，经由关键中间体2-三氟甲基-γ-丁内酯转化得到的化合物16的Vorbruggen糖苷化反应，合成了2＇，3＇-双脱氧-2＇-三氟甲基嘧啶核苷。

Lugalbanda was a god and shepherd king of Uruk where he was worshipped for over a thousand years.

Lugalbanda 是神和被崇拜了一千年多 Uruk古埃及喜克索王朝国王。

I am coming just now,' and went on perfuming himself with Hunut, then he came and sat.

我来只是现在，'歼灭战perfuming自己与胡努特，那麼，他来到和SAT 。