苄基

A process for preparing alkylene glycols including reacting an alkylene oxide with water in the presence of a combination of additives and an anion exchange resin, wherein the combination of additives comprises carbon dioxide and an organic or inorganic base provided in an amount sufficient to maintain a pH of the reaction mixture between about 5.0 and 9.0, with the proviso that, when the base is bicarbonate or carbonate, then the anion exchange resin is a trimethyl benzyl ammonium anion exchange resin.

制备亚烷基二醇的方法，包括让烯化氧与水在添加剂组合和阴离子交换树脂存在下进行反应，其中添加剂组合包括二氧化碳和以足以保持反应混合物的pH值在约5.0和9.0之间的量提供的有机或无机碱，前提条件是当碱是碳酸氢盐或碳酸盐时，阴离子交换树脂是三甲基苄基铵阴离子交换树脂。

Further investigation in this area leads to discovery of a new synthesis of benzofuran.

本部分工作不仅发展出了一条合成苯并二氢呋喃的新方法，而且展示了苄基化反应在合成中的应用潜力。

In the precence of the base catalyst KF/Al2O3, the one - pot reaction of 2 -hydroxybenzaldehyde or 2 - hydroxynaphthaldehyde with ethyl α- bromoacetate,α-bromoacetophenone , 1,4 - dichloromethylbenzene , 4,4'- dichloromethylbiphenyl and 1,5 -dichloromethylnaphthalene gave the benzofuran compounds in 38-89% yield.

本文报道用 KF/Al_2O_3作为碱催化剂，由水杨醛或2-羟基-1-萘醛分别和α-溴代乙酸酯、α-溴代苯乙酮、苄基氯、4，4'-二氯甲基联苯和1，5-二氯甲基萘等进行一锅化缩合反应，以38～89％的产率合成了14种芳并呋喃化合物。

Benzyl peroxide can be found in some of the most popular acne treatments today.

苄基过氧化氢可以发现，在一些最常用的治疗痤疮的今天。

Benzyl peroxide is one of the most popular ingredients in acne products.

苄基过氧化氢是其中最流行的成分在痤疮的产品。

The present invention relates to plastic fire retardant preparing technology, and is especially process of preparing pentabromo benzyl bromide.

本发明属于塑料加工用阻燃剂技术领域，具体涉及一种五溴苄基溴的制备方法。

Oxygen seems to be in charge of more e-Y 36 H2O = 3 mole%; time = 8 hours, more substituted benzyl carbon lead to the main products.

氧的电荷似乎位于更多电子 Y36H2O=3摩尔%；时间= 8小时，更多的被取代的苄基碳导致主要产品。

This method can be used in the solid-liquid two phase reaction, widening the application of α-tetra benzyl bromoglycose .

该方法拓宽了α-四苄基溴代葡萄糖和相转移催化法制备糖苷类化合物的应用范围。

Acording to the literature, we improved the yield of N- [4- benzy] cinchoninum bromide from cinchonine.

对光学活性的相转移催化剂N-4-碘苄基辛可宁溴酸盐的进行了改良合成。

A nonaquous capi l l ary e l ecbophoretic chira l separation of l , l '-bi-2-naphtho l with a new chira l se l ector N-benzy l cinchonine ch l oride is described in this paper.

利用新的手性选择剂苄基氯化辛可宁，在非水相中成功地分离了联萘酚对映体，并对分离的机理作了初步地探讨。

Now, however, all children continue in "comprehensive" schools, and the eleven-plus determines which courses of study the child will follow.

然而现在，所有的孩子都要在综合学校继续学习，所以这次考试只是决定他们将要学习哪些课程。

Cultivatable land , and led to a general recognition that development must not be carried at the cost of agriculture .

城区的迅速扩大在很多情况下侵占了宝贵的可耕地，使人们普遍认识到发展不能以牺牲农业为代价。