2-cyanopyrazine

Preparation of 2-cyanopyrazine from 2-methylpyrazine by catalytic ammoxidation over CrVPO catalyst;CrVPO型催化剂上氨氧化合成2-氰基吡嗪的研究SSR汉语字典

Research Progress in Vapour Ammoxidation of 2-Methylpyrazine to 2-Cyanopyrazine;气相氨氧化2-甲基吡嗪制备2-氰基吡嗪研究进展SSR汉语字典

The mechanism of 2-cyanopyrazine prepared from 2-methylpyraine by catalytic ammoxidation was studied.研究2-甲基吡嗪氨氧化催化合成2-氰基吡嗪的催化反应机理后,可知2-甲基吡嗪是通过一系列的脱氢、氧化生成甲醛吡嗪和羧酸吡嗪然后氰化生成产物的,因此优良的催化剂必须由活性及数目合适的脱氢、供[O]及氰化中心组成。SSR汉语字典

Research on the Synthesis of 2-Cyanopyrazine;2-氰基吡嗪的合成研究SSR汉语字典

2-cyanopyrazine was prepared from 2-methylpyrazine with above catalyst by vapor phase catalytic ammoxidation in a fixed-bed reactor.开发了一种由VMoOP四元素组成的氨氧化催化剂(V-II型),用该催化剂在固定床反应器内由2-甲基吡嗪为原料进行气固相接触氨氧化反应制备了2-氰基吡嗪。SSR汉语字典

Study on the synthesis of 2-methylpyrazine;2-甲基吡嗪的合成工艺改进SSR汉语字典

The mechanism of 2-cyanopyrazine prepared from 2-methylpyrazine by catalytic ammoxidation was explained qualitatively with the theory of appropriate structure of group.通过实验得到最优反应条件为:370℃,2-甲基吡嗪、水、氧气、氨气的进料摩尔比为1∶7。SSR汉语字典

It could be conjectured that 2-methylpyrazine is reacted via a series of dehydrogenations and oxidations to form intermediates pyrazinyl carboxylic acid and pyrazinamide which are then cynadized into 2-cyanopyrazine.研究2-甲基吡嗪氨氧化催化合成2-氰基吡嗪的催化反应机理后,可知2-甲基吡嗪是通过一系列的脱氢、氧化生成甲醛吡嗪和羧酸吡嗪然后氰化生成产物的,因此优良的催化剂必须由活性及数目合适的脱氢、供[O]及氰化中心组成。SSR汉语字典

Study on the New Catalyst of Synthesis of 2-Methylpyrazine;合成2-甲基吡嗪的新型催化剂的研究SSR汉语字典

Synthesis of 2-methylpyrazine-5-carboxylic Acid and Process Optimization;2-甲基吡嗪-5-羧酸的合成及工艺优化SSR汉语字典

Synthesis of 2 Hydroxymethyl 3,5,6 Trimethyl Pyrazine and Observation of its Affection on Rheologic Parameters2─羟甲基─3，5，6─三甲基吡嗪的合成及其对血液流变性的影响SSR汉语字典

Synthesis of 2-Hydroxy-Methyl-3,5,6-Trimethyl-Pyrazine Palmitate and Preparation of Intravenous Emulsion2-羟甲基-3,5,6-三甲基吡嗪棕榈酸酯的合成及其静脉乳剂的制备SSR汉语字典

Syntheses and Crystal Structures of Two Main-Group Metal Coordination Compounds Containing 5-Methylpyrazine-2-carboxylic Acid两个含5-甲基吡嗪-2-羧酸主族配合物的合成和晶体结构SSR汉语字典

Synthesis of 2,3,5-trimethyl Pyrazine2，3，5-三甲基吡嗪的合成研究SSR汉语字典

Studies on Dehydroaromatization of 2,3,5-Trimethyl-5,6-Dihydropyrazine2,3,5-三甲基-5,6-二氢吡嗪脱氢芳构化研究SSR汉语字典

Synthesis and Characterization of 3,4-Bis(pyrazine-2′yl)furoxan3,4-二(吡嗪-2′-基)氧化呋咱的合成与表征SSR汉语字典

Chain-like Organic Supramolecular Crystal Constructed by Hydrogen Bonding:2-Pyrazinecarboxylic Acid氢键型链状有机超分子晶体:2-吡嗪甲酸SSR汉语字典

Study on the Process of By-product 2-Picoline to 2-Vinylpyridine;副产2-甲基吡啶合成2-乙烯基吡啶的工艺研究SSR汉语字典

Studies on the Synthesis and the Spectrum of 5-propyl-2, 3-Dimethylpyrazine;5—戊基—2,3—二甲吡嗪的新合成方法及其谱图研究SSR汉语字典

Clinical Observation of Type 2 Diabetes Treated by Glipizide Combined with Metformin格列吡嗪联合二甲双胍治疗2型糖尿(bìng)的临床观察SSR汉语字典

Synthesis of 1-(2,3-Dihydrobenzo[b][1,4]dioxin-2-yl)-2-formyl piperazine1-(1,4-苯并二噁烷-2-甲酰基)哌嗪的合成SSR汉语字典

SELECTION AND CHARACTERIZATION OF THE CATALYSTS FOR SYNTHESIS OF 2-METHYLPIPERAZINE2-甲基哌嗪合成催化剂的筛选与表征SSR汉语字典

Study on the Synthesis of Imidacloprid's Intermediate 2-Chlorl-5-Methyl-Pyridne;制备吡虫啉中间体2-氯-5-甲基吡啶的研究SSR汉语字典

Synthesis of 3-Bromo-1-(3-chloro-2-pyridinyl)-1H-pyrazole-5-carboxylic Acid3-溴-1-(3-氯-2-吡啶基)-1H-吡唑-5-甲酸的合成SSR汉语字典

Preparation and characterization of pyridine or 2-methylpyridine intercalated layered V_2O_5吡啶,2-甲基吡啶插层五氧化二钒的制备及表征SSR汉语字典

Synthesis and process optimization of 2,5-diacetoxymethyl-3,6-dimethylpyrazine2,5-二乙酰氧甲基-3,6-二甲基吡嗪的合成及工艺优化SSR汉语字典