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The aminolysis and the effect of water on the aminolysis processes of n -methyl β-sultam have been studied using density functional theory method at the B3LYP/6-31G* level.

结果表明,N-甲基b-磺内酰胺的氨解反应有两条反应通道:一条是S-C键断裂生成产物P1,另一条是S-N键断裂生成产物P2。

The extracts are proanthocyanidins identified by anthocyanidin reaction and JR-spectra. Number-average molecular weight M(subscript n of the extracts are respectively 1705 (95%) and 798 (5%) determined by GPC and VPO.

用凝胶渗透色谱法和蒸汽渗透压法测定产物的相对分子质量M(下标 r及其分布,产物中95%以上组分的数均相对分子质量M(下标 n为1705(相当于聚合度4~5),其余组分的M,为798。

Quinazolin-4(3H)-ones(1) were conveniently synthesized from anthranilic acids and amidines,which could be chloridized with POCl_3 to obtain 4-chloroquinazolines (2).The reaction of 2 and 1H-pyrazol-3-amine would give two types of products.In the presence of acid or base,the C-N bond would be formed between the 4-position carbon of 2 and the NH_2 of 1H-pyrazol-3-amine.While the C-N bond between the 4-position carbon of 2 and the NH of 1H-pyrazol-3-amine would be formed when Pd catalyst was utilized.

以邻氨基苯甲酸类化合物和脒为原料,可方便地获得喹唑啉-4(3H)-酮类产物(1),1经POCl_3氯化可到4-氯代喹唑啉化合物(2)。2与3-氨基-1H-吡唑化合物反应可得到两种类型的产物,在酸、碱条件下2的4位碳和3-氨基-1H-吡唑化合物的NH_2发生C-N成键反应;在Pd催化条件下,2的4位碳则和3-氨基-1H-吡唑化合物的环内NH发生C-N成键反应。

In part one, the reactions of some active fluorine-containing compounds such as 2, 2-dihydropolyfluoroalkanoic acids and ethyl 2-hydropolyfluoroalkenoates were studied and various fluorine-containing heterocyclic compounds were synthesized. Using 2, 2-dihydropolyfluoroalkanoic acids as the starting material, 4-fluoroalkyl quinolin-2-ols, 2- [ -1-hydropolyfluoro-1-alkenyl] -4H-3, 1-benzoxazin-4-ones, 1-aryl -4, 9-dihydro-3-fluoro-alkyl-1H-pyrazo [3, 4-b] quinolin-4-ones, 5-fluoroalkyl-12H-quin olino [2, 1-b] quinazolin-12-ones, 4-fluoroalkyl-1, 3-dihydro-1, 5-benzodiazepin-2-ones and 4-fluoroalkyl-2H-pyrido [1, 2-a] pyrimidin-2-ones were synthesized through its condensation reaction with anilines, anthranilic acid, N'-aryl-o-aminobenzamides, o-nitro aniline, o-amino pyridine and their derivatives and the subsequent transformations. 5-Fluoroalkyl isoxazolidines, 3-fluoro-3-fluoroalkylisoxazolidino [4, 3-c] quinolin-4-ones, 3-fluoroalkylisoxazolino [4, 3-c] quinolin-4-ones and 2-aryl-3per fluoroacylindoles were synthesized by inter-and intramolecular 1, 3-dipolar cycloaddition of fluorine-containing olefins and nitrones.

第二部分,我们研究了α,α-二氟苄基卤类化合物的亚磺化脱卤反应、产物的转化及全氟烷基亚磺酸盐与芳环化合物的全氟烷基化反应,发现全氟苄基碘或溴及α,α一二氟苄基溴在保险粉等亚磺化脱卤试剂引发下可生成相应的亚磺酸盐;全氟苄基亚磺酸盐与氯气或溴反应可生成全氟苄基磺酰氯或磺酰溴;在烯烃存在下,全氟苄基碘则与烯烃发生加成反应,生成相应的1:1加成产物;在三价醋酸锰的作用下,部分芳香化合物如茴香醚,二甲氧基苯,吡啶,喹啉等可以和过量的全氟烷基亚磺酸盐发生双全氟烷基化反应,反应表现出一定的区域选择性,产率良好。

Result: There were many semipolar, low-polar and nonpolar antimicrobic components in natural products, they diffused slowly in medium, it was possible for false negative and leaked screening by inhibition zone size judging only, but TTC method was better precise and reliable with the sum of indicator size without dyed by TIC and inhibition zone size.

结果:天然产物中存在中极性、弱极性甚至非极性抗菌成分,在培养基中扩散较慢,现行K-B法以透明抑菌圈为判读抗菌活性依据,会低估样品抗菌活性,甚至出现假阴性结果,造成漏筛。以不能被TTC显色的指示菌范围和透明抑菌圈之和来判读天然产物抗菌活性,提高了K-B法检测天然抗菌成分的准确性和可靠性。

Membership card before work see proofs are the lead characters of the product, and business card printing and membership card making machine business card printing and membership card making have very different from that adopted by the round applanation embossing, inking is a non-continuous, production is slower business card printing and membership card production quality is also associated with business card printing and membership card making machine productmay has a definite difference.

会员卡制息后处事见到的样弛众是打样机的产物,与制卡和会员卡制息机的制卡和会员卡制息方法有着很不小不同,它拔取的是方压平的压印方法,输不朱是否不不续式的,不入产速率较缓,制卡和会员卡制息质度上也与制卡和会员卡制息机的本质产物有必定的不同。

The products were characterized by 13C NMR, DSC and tensile strength measurement. The high molecular weight atactic polypropylene had a good elasticity.

用13C NMR、DSC、拉伸实验对产物进行了表征,结果表明所得产物为高分子量的无规聚丙烯,具有良好的弹性。

Results of DSC determinations show that an adequate content of atactic polystyrene is favourable of the crystallization of isotactic polystyrene,but the addition of more aPS linearly decreases the crystallinity of iPS because of the dilution effect.

DSC测定表明,产物中的无规物有利于等规聚苯乙烯结晶,但对结晶的熔点有降低作用。向产物加入更多的aPS则由于稀释效应而使iPS的结晶度线性下降。

More and more attention is focusing on the safty of drinking water suply. In this paper, firstly, chloramine formation and the characteristics and kinetics of monochloramine autodecomposition were studied. Secondly, considering the high concentration of ammonia and the complication of organic matters in Shanghai Huangpu River, formation characteristics and rules of disinfection byproducts were reviewed during the breakpoint chlorination process, and on the basis of grading and clssification of organisms, the control effects of chloramination on DBPs formation were studied. Finally, the formation rules of 2-monochlorophenol, 2,4-dichlorophenol and 2,4,6-trichlorophenol from phenol chlorination were investigated, and related influencing factors and kinetics were analysed.

饮用水的安全供给受到越来越多的重视,本文首先进行了氯胺形态以及一氯胺自降解特性及其动力学研究;然后结合上海黄浦江水源氨氮浓度高、有机物成分复杂的特点,研究折点加氯过程中消毒副产物的生成特性和规律,以及在将有机物分级和分类的基础上,研究氯胺消毒对不同类别有机物生成消毒副产物的控制效果;最后考察了氯化苯酚生成2-一氯酚(2-MCP)、2,4-二氯酚(2,4-DCP)及2,4,6-三氯酚(2,4,6-TCP)的规律,并进行了影响因素和动力学分析。

Pneumoniae FH strain was cloned and the sequence was analysed by M13 DNA sequencing method. Comparing the PCR product sequcence with MP M-129 strain P1 gene, we found that there are 4 bases different. This may result from the different MP DNA templates. The maximum homology is 98.8%. The result confirmed the fidelity and specificity of the amplified target DNA segment by PCP, and suggested that two categories of MP P1 gene still exist a few differences even in the conservation region. The cloning MP DNA segment was labelled by random hexanucleotide priming, after hybridization, the probe detection was completed using an anti-digoxigenin antibody alkaline phosphatase conjugate, and the substrates 5-bromo-4-chloro-3-indolyl phosphate and nitro blue tetrazolium. This hybridization system is much superior to the radioactive probe hybridization, because it is safe, easy to handle and has no limitation of decay time. The time required for colormetic detection is also much less than the corresponding autoradiographic exposure time needed to achieve similar detection limits with 32P-labelled probes. The Dig-probes could be used repeatedly, and this made them not only much convenient to use, but also lower the cost, and worthwhile to be used popularly.

将PCR产物进行重组,并将阳性重组质粒,应用M13测序系统对产物进行DNA序列分析,并与MPM-129株P1基因核苷酸进行同源性比较,发现有4个位置的碱基发生了变化,其同源性为98.8%,证实了PCR所扩增DNA片段的准确性和特异性,同时也证实了不同MP组型的P1基因即使在保守区也存在着一定的差异,将克隆的目的DNA片段用异羟基洋地黄毒苷配基用随机引物法标记制备MP DNA探针,杂交后用碱性磷酸酶标记的抗Dig多克隆抗体与杂交体反应,再用BCIP和NBT呈色,制备MP DNA探针,鉴定所扩增片段的特异性,与同位素探针比较,Dig探针不受半衰期限制,可反复使用,而且价格低廉,值得推广使用。

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