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- cyclo alkenesn. 环烯
- Drived by CYCLO Reducer strong and long service time. 由CYCLO减压器驱动,工作时间长且强劲。
- Little peroxides, computed by reactant alkenes 1‰, if put into jet fu... 添加极少量过氧化物,以反应烯烃计1‰,可以起到银片腐蚀抑制剂作用。
- It provides a useful vehicle for transforming unsaturated acids to their corresponding alkenes. 它为使不饱和酸变成相应的烯烃提供了一个有用的中间体。
- The synthesis of cyclo(-Ab7-Aib-Phe-D-Pro-) which uses solid phase peptide synthesis with N-Fmoc protection is faild. 本论文尝试用固相法氨基酸N端Fmoc保护策略合成cyclo(-Ab7-Aib-Phe-D-Pro-)。 但是最终产物经ESI-MS分析不是目标产物,故改用液相法合成目标化合物。
- The process provides a facile way of producing hydrocarbl perchlorate from alkenes, cycloalkenes, aralkenes, alkanols, cycloakanols and aralkanols. 本文介绍了从链烯、环烯、芳链烯、链烷醇、环烷醇、芳烷醇来制备过氯酸烃基酯的方便方法。
- The above conversion was believed to proceed via a substitution cyclo aromatization mechanism. 苯硫酚为亲核体时,产物为芳基苯基硫醚。
- The process provides a facile way of producing hydrocarbyl perchlorates, from alkenes, cycloalkenes, aralkenes, alkanols, cycloalknols and aralkanols. 本工艺程序提供了从链烯、环烯、芳链烯、链烷醇、环烷醇、芳烷醇来制备过氯酸烃基酯的方便方法。
- Many constituents are mutagens and carcinogenic such as alkenes, nitrosamines, polynuclear aromatic and heterocyclic hydrocarbons, amines . 烟草的很多成分都会引起有机体突变以及致癌;如烯烃化合物;亚硝胺;多核芳香烃以及多环碳氢化合物和铵.
- Catalysis: Development of chirometallopor-phyrins as enantioselective oxidation catalysts of alkenes and sulfides. 催化作用:开发新型手性金属催化烯类及硫醚类之对映选择性氧化。
- Recent progress on asymmetric epoxidation of unfunctionalized alkenes by chiral catalysts was summaried. 综述了手性催化剂催化的不对称环氧化反应研究进展情况。
- Finally, cyclo(-Ab7-Aib-Phe(2-Me)-D-Pro-) is successfully prepared by using liquid phase peptide synthesis with Boc protection. Boc-Ab7-Aib-Phe(2-Me)-D-Pro-OBzl脱除两端保护得到线性肽链经过环化得到目标产物cyclo(-Ab7-Aib-Phe(2-Me)-D-Pro-),收率0.;8%25。
- The synthesis and application of vinylic tellurides in stereoselective synthesis of alkenes were reviewed. 综述了近年来烯碲化合物的合成及其在立体选择合成中的应用。
- Alkanes, alkenes, and alkynes are all hydrocarbons (compounds made up of hydrogen and carbon only). 链烷、链烯和链炔都是碳氢化合物(纯净的碳和氢所组成的化合物)。
- Naming of alkynes is very similar to the naming of alkenes, using the root name of the longest carbon chain. 选取同时含叁键和双键最长的碳链做母体,使双键位次尽可能最小。
- Epoxidation of alkenes is one of the most important reactions in organic, synthesis. 烯烃环氧化在有机合成中占有十分重要的地位。
- If you came into a bike store with a poor shifting Simplex or Huret derailleur or a sick Regina or Cyclo freewheel, the standard repair was to replace it with SunTour. 如果你走进一家自行车商店带着一个贫穷的转变单纯或呼热图变速器或生病里贾纳或环状飞轮,标准的修复工作,以取代它与山图。
- Alkenes have one or more double bonds between carbon atoms, where two pairs of electrons are shared. 链烯有一个或多个共价键,即碳原子分享两对电子。
- According to the using condition of heavy me dium cyclo ne,this paper develops and designs heavy medium cyclone.It improves separating e ffect and life in practice. 根据重介质旋流器的实际应用情况,对重介质旋流器进行开发设计,提高了重介质旋流器实际应用中的分选效果和寿命。
- Based on the trends,it is important to decrease the content of alkenes in FCC gasoline. 随着对环保问题的日益重视,人们对燃料的要求也越来越高,降低FCC汽油中的烯烃含量迫在眉睫。
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