溴

Under these conditions several aryl iodides bearing awide range of functional groups were converted into the corresponding aryl azides in good yields.

在重新优化后的条件下，大部分不活泼芳基溴化物可以与叠氮化钠发生交叉偶联反应得到良好收率的芳基叠氮化储蓄型投资银条合物，但是有拉电子基团取代的芳基溴化物与叠氮化钠的偶联反应则难以进行。

This PhD thesis mainly summarizes the original results on studies of aromatic amide-derived phosphines,including the precatalyst system consisting of Aphos and Pd_2 and the applications for promoting room temperature Suzuki cross-coupling of aryl chlorides and aryl/vinyl bromides,respectively,with aryl/vinyl boronic acids,and alkyl boranes.

本博士学位论文主要总结了对芳基酰胺衍生的膦配体的研究，以及该类型配体与Pd_2组成的催化剂在室温下催化氯代芳烃、溴代芳烃、溴代烯烃分别同芳基硼酸、烯基硼酸及烷基硼试剂进行的Suzuki偶联反应中的表现。

Shandong Tianxin Chemical Co., Ltd.(formerly the Shandong Shouguang Salt Chemical Plant)– We are a provincial-level high-tech enterprise specialized in the development and manufacture of bromine series products. And we are the professional production and export base of inorganic bromides in China.

山东天信化工有限公司（原山东省寿光市盐业化工厂）：是一专业从事溴系列产品开发生产的省级高新技术生产企业，为国内最大的无机溴化物专业生产出口基地。

Novel Methods and Agents for Fire Suppression including the revolutionary environment friendly SFE Powder Aerosol Halon alternative and the unique Electro-magnetic Ion-wind extinguishing means;· Ecology oriented technologies including Electro-optical Monitoring of hazardous pollutants and toxic vapors/gases as well a novel approach to Halocarbon selective dissociation and neutralization in order to eliminate the Ozone Depleting CFC and Halons from existing systems /banks and prevent further damage to the environment.

这是一种氯氟烃和溴氟烃选择性降解和中和的新方法，这些物质存在于当前自然界中并能导致臭氧耗损，这项技术能够防止氯氟烃和溴氟烃进一步破坏环境。

It is also found that pressure has no detectable effect on the free-energy change of inserting a halothane from bulk water to DMPC, and does not change the regional preference of halothane, either.

另外也发现压力对於三氟氯溴乙烷从纯水溶入 DMPC 的自由能改变所造成的影响很小，且对於三氟氯溴乙烷的偏好区域没有可观的影响。

The coupling reaction of aryl iodides, bromides and chlorides with differentolefins catalyzed by catalyst 2 and 4 was studied. It was found that compounds 2 and 4 anchored on active carbon are efficient catalyst for the Heck reaction in the case of aryl bromides and aryl chlorides as substrates (Scheme 3). It is notable that catalyst 4 has higher efficiency for aryl chlorides.___^H Cat.2 or 4, Base HXSolution, 100C or 140

以化合物2和4为代表，重点研究了活性炭负载的二茂铁亚胺环钯化合物催化碘代苯、溴代苯和氯代苯与活泼烯烃之间的偶联反应(Scheme 3)，发现活性炭负载的二茂铁亚胺环钯化合物2和4均可用于催化多种溴代和氯

In this thesis, the design, synthesis and application of substituted 1,8-naphthalimides and napthopyrones conjugated with uridine, substituted 1,3,5-triazine, 1,2-dibromoethane, ethyl bromoacetate have been studied.

本论文研究了取代l，8-萘酰亚胺和萘并吡喃酮与尿苷、取代均三嗪、二溴乙烷、溴乙酸乙酯偶合和双l，8-萘酰亚胺之间偶合的设计、合成及应用。

Bromo-5-formyl -3-methylpyrrole is an important intermediate of tolyporohin. On the base of introducing the present research and development of tolypo- rohin and pyrroles ramification at home and abroad, an emphasis was made on synthesis of 2-Bromo-5-formyl -3-methylpyrrole and the technical conditions of all steps, which was described as follows.

由于2-溴-5-甲基-3-甲基咯是合成托尼吩的重要中间体，本文在阐述了当前托尼吩及咯衍生物的国内外研究和开发的基础上，重点研究了2-溴-5-甲基-3-甲基咯的合成，并对各步反应进行了工艺研究，具体合成步骤如下：本文通过对乙乙酸乙酯的亚硝化、还原、成环，反应生成咯单环衍生物2，4-二乙氧羰基-3，5-二甲基咯。

The effect of chloroacetyl chloride and bromoacetyl bromide on yields of intermediates and nitrazepam was compared.

比较了氯乙酰氯和溴乙酰溴对中间体及硝基安定收率的影响。

High-density fluids include solids-free, potassium chloride, sodium chloride, calcium chloride, zinc bromide and calcium bromide formulations.

高密度液体包括无固体的氯化钾、氯化钠、氯化钙、锌、溴铵和溴化钙制剂。

The labia have now been sutured together almost completely.The drains and the Foley catheter come out at the top.

此刻阴唇已经几乎完全的缝在一起了，排除多余淤血体液的管子和Foley导管从顶端冒出来。

To get the business done, I suggest we split the difference in price.

为了做成这笔生意，我建议我们在价格上大家各让一半。