中间体

Moreover, two efficient, one-pot procedure were reported for the synthesis of N-trifluoroacetyladriamycin-14- valerate (AD-32). The yields are 35% and 28%, respectively.

其次采用两种新的合成方法，方便地制备了氟乙阿霉素（AD-32），产率分别为35％和28％，均高于文献报道，两种方法的中间体均无需分离纯化，容易实现工业化。

Veratrum aldehyde synthesis of many drugs intermediates, methyl aldehyde method for raw materials in Champlain, after dimethyl sulfate methylation available to 20% sodium hydroxide as the solvent, 10-11 in the PH value of the under the conditions of synthesis; microwave irradiation is the use of microwave radiation heating to replace the traditional approach to synthesis of a product of methylation reactions, this method does not require solvents, and less by-products, but still need to use 15% sodium hydroxide to adjust pH.

藜芦醛是许多药物合成的中间体，甲基化法以香兰醛为原料，经过硫酸二甲酯甲基化可得，以20%氢氧化钠为溶剂，在PH值为10-11的条件下合成；微波辐射法是利用微波辐射代替传统加热方式进行甲基化反应合成产物，这种方法不需要溶剂，并且副产物少，但仍需要用15%氢氧化钠来调节酸碱度。

This article reviews recent progress in nucleophilic reaction s of the a - carbon in vinylidene ruthenium complexes.

综述了近几年钌亚乙烯基络合物中间体α-碳的亲核反应。

He was a tenor , and he was able to accompany himself on the viol or the archlute ; he sang at various entertainments, including weddings and affairs of state, and took part in the sumptuous intermedi of the time, the elaborate musical, dramatic, visual spectacles which were one of the precursors of opera.

他是男高音，他能陪伴在强奸或 archlute 他自己，他在各种娱乐唱，包括婚礼和国家事务，并参加了当时的豪华中间体的一部分，精致的音乐，戏剧，视觉其中眼镜的歌剧的先驱之一。

We have developed new types of pesticide with broad spectrum,high efficiencyand low poison.At present,we have six TC including insecticide,weedicide,bactericide and four series intermediates used in medicine,pesticide and dyestuff.

大力发展广谱、高效、低毒的新型农药，目前已形成前后一体化产品体制，包括杀虫、除草、杀菌六大原药以及用于医药、农药和染料的四大系列的中间体产品。

Section weft are specialized in chemical raw materials and intermediate pharmaceutical research and development and trade as one company.

科纬化工是专业从事医药原料和中间体的研发和贸易为一体的公司。

" Of " Yu Feng is energy-saving main characteristic invests environmental protection air-conditioner small, efficiency is big; Power consumption is small, horary use 1 degree of phone only; Refrigeration agency is water, need not compressor, without freon, free from contamination; Airframe uses complete stainless steel to be made, well-set, wear well; Use 5090 efficient evaporate wet shade, make indoor air cleaner, fresh; Overall full automatic electronic control system cleans a func

宇风"节省能源环境保护空调机重要特征注资小、效率大；耗电量小、每钟头仅用1度电；制冷中间体为水、不需要缩小机、无氟利昂、无污染；机身使用全不锈钢作成，构架坚实，持久经用；使用5090有效辉发湿帘，使房内空气air更清爽、清爽；整机全自行电子信息掌控体系自行冲冼效能；液晶表明带遥感，毛病少，保护容易。"

Methoxystilbene and 2-methoxy-4'-nitrostilbene were synthesized from benzyl chloride and nitrobenzyl chloride by the Wittig reaction, and used as intermediates for the synthesis of the final product fluorescent whitener FP4,4'-bis(2-methoxystyrylbiphenyl via reduction and diazotisation of the latter followed by reaction with the former in the presence of NaOH.

以氯化苄和对硝基氯苄为原料，经Wittig反应合成中间体：2-甲氧基-二苯乙烯和2-甲氧基-4'-硝基-二苯乙烯。后者经还原反应、重氮化反应后，在氢氧化钠存在下与前者反应生成最终产品荧光增白剂FP4，4'-双-2-(甲氧基苯乙烯基联苯。为该类荧光增白剂的合成开辟了一条新路线

Xylenol is an important medical intermediate.

3，5-二甲基苯酚是一种重要的医药中间体。

Xylitol is a kind of nutritional value of sweet substances, but also the human metabolic intermediates.

木糖醇是一种具有营养价值的甜味物质，也是人体新陈代谢的中间体。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。