查询词典 chloro-carbonate

A synthetic method for N-(5-nitro-6-chloro-3-pyridine methyl) phthalimide is studied.

研究了N-（5-硝基－6-氯－3-吡啶甲基）邻苯二甲酰亚胺的合成方法。

By using 4-chloro-5-nitro phthalimide as raw material and through aminoysis, reduction, cyclization and hydrolysis, end-produce benzimidazole-5,6-diformic acid is prepared.

本发明公开了一种苯并咪唑－5，6－二甲酸的制备方法。该方法是以4－氯－5－硝基邻苯二甲酰亚胺为原料，依次经过氨解、还原、环合、水解反应过程，制得最终产品苯并咪唑－5，6－二甲酸。

Within carboxylic groups, the coordination properties of carbonyl were studied and tn SEM graphs of picolinic acid, meta-methyl benzoic acid and 2-chloro-benzoic acid systems, a large amount of chains like structures probably caused by crystal growth have been firstly observed.

首次在杯[4]芳烃下沿羟基引进亲电性的三乙氧基硅基异腈酸丙酯，并且根据能量传递与匹配的机理合成了五种新型以改性超分子为功能片段的强键型杂化材料，其中与铽能量传递与发射情况最为优异。

The synthetic conditions of 4,4 dimethyl 3 oxopentanenitrile prepared sequentially from acetone through pinacol , pinacol one and α chloro pinacol one were investigated.

对以丙酮为原料、先依次制得片呐醇、片呐酮、α氯代片呐酮、最后由α氯代片呐酮与NaCN反应制得 4，4 二甲基 3 氧戊腈最后两步的反应条件进行了研究。

In order to find new pyrazole leading compounds, 14 1--4-(pyrazol- 5-ylcarbony)semicarbazide devivatives were synthesized from 4-chloro-3-ethyl-1-methyl-5-pyrazole car-bonydrazide and substituted phenylisocyanate.

为了寻求新的吡唑先导化合物，用4-氯-1-甲基-3-乙基-5-吡唑甲酰肼与取代苯基异氰酸酯反应得到了14个新的1-吡唑酰基-4-芳基氨基脲类化合物。

A compound of formula wherein R1 is hydrogen, halo or methoxy; R2 is hydrogen, halo, methyl, ethyl or methoxy; R3 is carboxy, tetrazolyl, or -CONHSO2R where R is methyl, ethyl, phenyl, 2,5-dimethylisoxazolyl or trifluoromethyl; T is -CH2- or -SO2-; and ring A is 3-chlorophenyl, 4-chlorophenyl, 3-trifluoromethylphenyl, 3,4-dichlorophenyl, 3,4-difluorophenyl, 3-fluoro-4-chlorophenyl, 3-chloro-4-fluorophenyl or 2,3-dichloropyrid-5-yl; or a pharmaceutically acceptable salt or prodrug thereof, as well as pharmaceutical compositions containing them are described and claimed.

本发明涉及一种式化合物，其中R 1 是氢原子、卤素或甲氧基；R 2 是氢原子、卤素、甲基、乙基或甲氧基；R 3 是羧基、四唑基或－CONHSO 2 R 4 ，其中R 4 是甲基、乙基、苯基、2，5－二甲基异∴唑基或三氟甲基；T是－CH 2 －或－SO 2 －；环A是3－氯苯基、4－氯苯基、3－三氟甲基苯基、3，4－二氯苯基、3，4－二氟苯基、3－氟－4－氯苯基、3－氯－4－氟苯基或2，3－二氯吡啶－5－基；或其药用允许的盐或前药，还包括所阐述和要求权利的含有它们的药用组合物。

Correlation analysis of both chlorotic plants and plants staying green of the F3populations revealed that there was a significant positive correlation between yield index values and the physiological indices net photosyn- thetic rate, stomatal conductance, and chloro- phyll, as well as a significant negative correlation between yield index values and the physiological indi- ces intercellular CO2 concentration and malondial- dehyde.

相关性分析表明收获指标与生理指标，如净光合速率、气孔导度、叶绿素含量等呈显著正相关；而与细胞间CO2 浓度及丙二醛含量呈显著负相关。

In this study, new benzo[l,2,3]thiadiazole derivatives were designed according to relationship of structure and efficacy. The 9 novel compounds were synsthesized with following reactions. The chlorine atom in 2-chloro-3,5-dinitro-benzoic acid as beginning raw material was substituted by 2-methylpropane-2-thiol, esterified then with bromoethane, reduced by iron powder and cyclized to obtain ethyl benzo[l,2,3]thiadiazole-7 after diazonation reation.

本论文根据苯并噻二唑诱导剂的构效关系设计了新的苯并噻二唑的结构，并合成了9个未见文献报道的化合物，合成步骤如下：采用2-氯-3，5-二硝基苯甲酸为起始原料，苯环上的氯原子被叔丁基硫醇置换，羧酸由溴乙烷酯化，硝基由铁粉还原，随后经重氮化关环生成苯并[1，2，3]噻二唑-7-羧酸乙酯。

Tetraphenyl-1,2-ethanediol and a S-S bond type thermal iniferter, i.e., tetraethyl thiuram disulfide were used to consist of new reverse ATRP initiation systems TPED/FeCl3/PPh3 and TD/FeCl3/PPh3, respectively.

这比文献(Sawamoto et al， 1998)报道的由2-氯-2，4，4-三甲基戊二酸二甲酯(dimethyl 2-chloro-2，4，4-trimethylglutarate)/RuCl2(PPh3)/Al引发体系引发MMA聚合的方法制备α-H，ω-Cl-PMMA要简便。

Syntheses of Grignard precursor, N - tert -butyl-4-chloro-piperidine, were accomplished via transamination with a quaternary ammonium piperidone or via addition of methylmagnesium chloride to an iminium ion.

氏体合成， N-叔丁基-4-氯哌啶、出自同一个经转氨酶哌季铵盐或透过增设methylmagnesium亚胺离子的氯化物。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。