吡啶

Because POTPy and POTPyOT contain pyridine in the main chain, their conjugation length is shorter than that of POTT and POTTOT, leading to the UV and fluorescence spectra of the former are blue-shifted with respect to those of POTT and POTTOT.

POTPy及POTPyOT主链的结构内具有吡啶，导致共轭链的长度缩短，因此在吸收及萤光光谱的位置都比POTT、POTTOT还要蓝位移。

Moreover, one novel photochromic compound: 3,3-bis(4-methoxybenzyl)-3H-naphtho[2,1-b]pyran has been synthesized, which may be used in optical lenses to protect human eyes from being damaged by ultraviolet lights.

该化合物具有较好的光致变色性质，其开环式的颜色与吡啶并苯恶嗪的颜色互补，这两种化合物相结合构成第二代Transitions镜片的基础。

Study on Surface Enhanced Raman Scattering of Piperidine;2. Using piperidine as catalyst and ethanol as solvent, a series of new 2-amino-3-cyano-4-aryl-6-methoxy-1,4,9,10-tetrahydronaphtho[2,1-b]pyran derivatives were synthesized by one-pot reaction of aromatic aldehydes, malononitrile and 7-methoxy-1,2,3,4-tetrahydronaphthalen-2-one at room temperature in good yields.

以芳醛、丙二腈和 7 甲氧基 1，2 ，3 ，4 四氢萘 2 酮为原料，在六氢吡啶催化下以乙醇为溶剂，在室温合成了一系列新的 2 氨基 3 氰基 4 芳基 6 甲氧基 1，4，9，10 四氢萘并 [2 ，1 b]吡喃衍生物，反应条件温和，产率较高，并通过IR ，1HNMR和元素分析表征产物的结构，还通过单晶X射线衍射分析确证产物的构

In Chapter 2, construction, structures and properties of sixteen one-, two-, and three-dimensional coordination polymers self-assembled by 4,4'-bipyridine (4,4'-bpy) and pyrazine with metal salts have been described.

第二章描述了16种含4，4'-联吡啶和吡嗪桥连配体的聚合金属配合物超分子的构筑、结构及性质。通过改变酸度、溶剂体系及各种反离子等条件，分别得到不同层次和维数的、具有各种孔穴或通道结构的聚合配合物。

This, Neway Securities analyst Huang Bo told reporters that if the issuance of the smooth passage, the red sun's pesticide rapid expansion of production capacity, at the same time will have to be fat pyrethrum, Pyridine alkali and glyphosate acid three complete industry chain platform, the formation of "intermediate - the original drugs - agents - sales channels," the overall advantage.

为此，新时代证券分析师黄百告诉记者，如果顺利通过发行，红太阳农药迅速扩大生产能力的同时，将必须脂肪除虫菊，吡啶碱和草甘膦酸三个完整的产业链平台，以"中间形成-了-代理商-销售渠道"的整体优势原来的药物。

At present, the red sun of the Group's production of pyridine for the main use.

目前，该集团的吡啶生产主要使用红色的太阳。

The results show that the total pyridine base yields reach 50%~70%.

实验发现，以所合成的产品为催化剂，吡啶碱总产率可达50%~70%。

In the second chapter, a series of pyridine derivatives are synthesized.

第二章，吡啶类衍生物的合成和表征，共合成了25种化合物，其中目标产物15种。

Who have mastered the production of pyridine technology, will have the equivalent of a printing press.

谁掌握了吡啶生产技术，将具有相当于一台印刷机。

In vivo metabolism mainly in the building of the prototype of the pyridine ring oxidative metabolism.

体内代谢主要表现为在原形药吡啶环上的氧化代谢。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了