The thesis consists of two main sections. The synthesis of 1,3,4-thiadiazoles,triazolotriazines and dioxapyrrolinopyrazoles containing chiral pyrazolyl moietyfrom D-glucose is described in the first part and the section one is about theDiels-Alder reactions between dienophile enaminones and diene 1,2,4-triazines,which provides a new methodology to construct the pyridine compounds. A total of37 new compounds were synthesized.

本論文包含兩部分內容，一是以D-葡萄糖為原料合成含手性吡唑基的191手机视频在线，3，4-噁二唑、三唑并三嗪及二氧代吡咯啉并吡唑類化合物欧美自慰；二是將烯胺酮作為親雙烯體，與雙烯體19色蝌蚪，2www久久99com，4-三嗪類化合物發(fā)生Diels-Alder反應，發(fā)現了一令人意外的構建吡啶類化合物的新方法亚洲一级国产视频。

With sodium acetate as catalyst, inosine was esterified with acetic anhydride in the yield of 92% to give 2',3',5'-triacetyl inosine, which was treated with pyridine and phosphorus oxychloride to form a pyridinium solution, followed by performing an amination at 40℃ and 0.25~0.30 MPa to achieve adenosine in the yield of 67%.

肌苷在醋酸鈉存在下與醋酸酐發(fā)生酯化反應以92%的收率得到2'成年人视频网站免费，3'，5'-三乙酰肌苷，其化合物經吡啶和三氯氧磷處理形成吡啶鹽溶液又粗又爽又黄的吃奶视频，未分離直接在40℃高清无码乱伦a、0.25~0.30 MPa壓力下進行氨解反應以67%產率制得腺苷。

The nitrogen in the coal exists in the forms of pyridine (N-6), pyrrolic and pyridone (N-5), quaternary nitrogen and nitrogen oxides. The N-Q near 401.5eV is assigned to a protonated or oxide form of pyridinic nitrogen. On this basis, the nitrogen in six-membered rings is the dominant in Yibin coal.

研究結果表明一级黄色免费无码，宜賓煤中氮的官能團有4種国产无码视屏在线，即吡啶(N-6)、吡啶(N-5)一级做a爱黑人又粗又硬、質子化吡啶和氮氧化物国内乱伦自拍视频，其中吡咯含量最大，煤中的N-X就是N-O处女福利视频，是煤中吡啶結構氮與氧直接結合的結果中文字幕一级黄片。

Macrocycle with two pyridyl unitsZ-protected groups in the di-ester formed from esterification of Z-Glycine with 2,6-bishydroxymethyl pyridine was removed and thenconverted into Ts-protected group.

本論文以天然氨基酸為手性源，以芳雜環(huán)為大環(huán)分子的剛性因素操人黄片视频免费，研究它們的環(huán)合反應和分子結構人人摸人人人草，為此設計了下列三種結構類型的大環(huán)分子：一。

A liquid crystal with pyridine group was synthesized from reactants of pyrogallic acid and isonicotinato by esterification reaction.

以焦性沒食子酸和異煙酸為原料合成了帶吡啶官能團的液晶配體免费看国产黄片。

This study discussed the composition of coal pyridine soluble from column-chromatography and the Soxhlet extraction method.

本研究以吡啶為溶劑蝌蚪窝色久，對準葛爾黑岱溝、平朔在线视频图区、潞安常村3種不同變質程度的煤樣進行了柱色譜分離和索氏抽提91精品高清国产九九九。

It is found that when the molar ratio of sulphoxide,pyridine and acetyl bromide is 1∶0.6∶0.4,the catalytic effect on the ring-enlargment is the best,and the yield and purity of the final product can reach 76% and 97% respectively at a pH of 1.8 in toluene under refluxing for about 3.5h.

通過正交實驗可得出以下結論：當N，N′-雙脲-亞砜為2.5∶1丝袜人妻一区二区三区网站，乙酰溴-亞砜為0.4∶1久久影院jiujiure99，吡啶-乙酰溴為1.5∶1，回流時間為3.5haaaaaa爱爱，酸化pH值為1.8時私人午夜影视，擴環(huán)反應結果最好，總收率可達76%黄色生活片黄色生活片操逼片，純度97%以上男女内射视频在线观看网站。

To economize cost of S03H-functionalized ionic liquids,extend their range of application in chemistry reaction,fifteen of ionic liquids have been synthesized by using methylimidazole,tri-alkylamine,pyridine with industrial materials 1,4-butane-sultone and 1,3-propane sultone as source in this paper.The ionic liquids were synthesized by tri-alkylamine have not been reported and yields are higher than 98%.

為了降低SO_3H-功能化離子液體的成本，使其應用范圍更加廣泛99视频这里有精品，本論文利用N-甲基咪唑超97人妻在线公开免费视频、三烷基胺、吡啶和廉價工業(yè)級原料1狼友在线无码视频免费入口，3-丙烷磺內酯国产合集、1，4-丁烷磺內酯為原料來源东南亚高清无码视频，合成十五種SO_3H-功能化離子液體超碰97人妻在线，三甲胺為原料合成的SO_3H-功能化離子液體還未見文獻報道，收率大于98%。

A gelator (G2) synthesized from 1,2,4,5-benzene tetracarboxylic acid and 4-hydroxy pyridine at molar ratio of 1:4 was characterized by 1H-NMR and FT-IR.

采用1H-NMR和FT-IR表征了在摩爾比1：4條件下18在线观看黄片，由均苯四甲酸和對羥基吡啶合成的一種凝膠因子(G2)就去色色五月天。

Compared with G1 synthesized from 1,2,4,5-benzene tetracarboxylic acid and 4hydroxy pyridine at molar ratio of 1:2,G2 gelled water at higher minimum gelator concentration and gave the gel with lower gel-to-sol dissociation temperature at the same concentration.

相對于在摩爾比1：2條件下，由均苯四甲酸和對羥基吡啶合成的凝膠因子G1亚洲毛片无码一区二区，在相同濃度下免费一级欧美大片在线观看，G2在更高的最低凝膠因子濃度使水凝膠，并且得到的凝膠具有更低的凝膠-溶膠破壞溫度午夜国产性爱影视在线超黄超污A片。