您要查找的是不是：
- polyaromatic heterocycles 芳烃杂环聚合物
- Heterocycles have been passed over in large part by chemists confronted with synthetic problems. 杂环化合物常被许多从事合成研究的化学家所忽视。
- Boron-substituted polyaromatic mesophase was prepared by co-pyrolysis of a coal tar pitch with pyridine-borane complex under autogeneous pressure. 以煤焦油沥青和吡啶硼烷为原料采用加压热缩聚工艺制备硼取代聚芳烃中间相沥青。
- It is highlighted to illustrate typical examples and situations where RCM can be used to synthesis of heterocycles. 著重讨论了RCM反应在合成杂环化合物中的应用。
- The organometallic compounds - catalyzed cyclization reactions in syntheses of carbo -and heterocycles are reviewed. 综述了近年来金属有机化合物催化的环化反应在合成碳20环及杂环化合物中的应用。
- Thiadiazoles, which contain N, S atoms of five-membered heterocycles, have important chemical and biological values. 噻二唑类化合物是含有N、S原子的五元杂环化合物，具有重要的化学和生物应用价值。
- A large number of potential carcinogens can be released in incense smoke, including polyaromatic hydrocarbons, carbonyls, and benzene. 大量的潜在的致癌物随熏香的烟雾散发，包括多环芳烃，碳氢化合物，羰基和苯。
- Lf however instead of clean oils tar used, these ofien contain hidh amounts of polyaromatic hydrocarbons, which-as discussed before-are known to be carcinogenic. 如果用了矿物油焦油,就会含有多环芳烃一致癌物。
- The reaction tolerates sensitive moieties (methyl esters or nitriles), ortho substitution, and heterocycles (i.e., 2-furan). 反应灵敏萘容忍(甲基酯或腈);替代邻、杂环(即2-呋喃).
- This paper reviews the recent progress on the study of this synthon, including the application in the synthesis of fluorine-containing heterocycles. 综述了近年来此类含氟砌块的研究进展，特别是在合成各种含氟杂环化合物中的应用。
- Past research has found that burning these materials can produce potentially cancer-causing substances, including benzene and polyaromatic hydrocarbons. 过去的研究发现，燃烧这些物料可能会产生致癌物质，其中包括苯和多环芳烃。
- In this article, we focus our research on iodobenzene diacetate applied in the syntheses of N-containing heterocycles and elementary organic reactions. 本论文主要研究了二醋酸碘苯在含氮杂环化合物的合成及有机基元反应中的应用。
- The polycyclic aromatic sulfur heterocycles (PASH) in the environment is characteristic as the stable nature, not easy to be degraded, strong toxic and potential danger. 有机含硫芳烃化合物(PASH)性质稳定，不易降解，毒性极强，具有潜在的危害特征。
- Condensed Fukui function(CFF)was used to predict the reactive sites in electrophilic substitution ofpenta-heterocycles(pyrrole and furan),hexa-heterocycle(pyridine)and a series of mono-substituted heterocycles(ortho-,meta-and para-). 采用收敛的Fukui 函数对传统杂环和其单取代产物在亲电取代反应中的活性部位做了预测。 研究体系为传统的五元(呋喃、吡咯)和六元杂环(吡啶)以及取代基在邻位,间位和对位(相对于杂原子)的单取代杂环。
- The research progress on carbonylation reactions of heterocycles (such as epoxides and aziridines) during the last 40 years is reviewed in the presence of transition metal complex catalysts. 综述了近40年来杂环化合物和一氧化碳在金属络合物催化下的羰基化反应,详细讨论了不同类型反应的有关机理,并展望了该领域的研究前景。
- five-membered heterocycles additive 五元杂环类添加剂
- Polycyclic aromatic sulfur heterocycles 芳香硫化合物
- nitrogen heterocycles energetic materials 氮杂环含能材料
- nitrogen-containing heterocycles 含氮杂环
- synthetic polyaromatic fibrecloth sulphone compound foil 合成聚芳砜纤维复合箔
