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The degree of hydrogen bonded amidogen of the polyurea is high and the hydrogen-bonded urea carbonyl is 57.2%, including 63.1% ordered hydrogen bonding.

结构形态研究表明,PAE-F聚脲呈现非晶形态;氨基氢键化程度高,脲羰基总氨键化程度为57.2%,其中完善氢键化程度为63.1%。

Unsaturated alkynyl alcohols, such as dehydronerolidol, dehydrogeranyllinalool, and dehydroisophytol, were prepared by ethynylation of turpentine derivatives, namely terpenylacetones, e. g. geranylacetone, farnesylacetone, and phyton under normal pressure in presence of alkali metal hydroxide and organic solvents.

松节油衍生物格萜烯基丙酮,如香叶基丙酮、金合欢基丙酮和植物酮在常压条件,碱金属氢氧化物和有机溶剂存在下可发生乙炔化反应,形成对应的α,β-不饱和炔醇化合物脱氢橙花叔醇、脱氢香叶基芳樟醇和脱氢异植物醇。

We believe that in CO hydrogenation reaction, the scission of C-O bond is via the carbonyl hydride-multihydrogen carbonyl hydride.

与CO加氢反应和CO歧化的吸附态研究结果相关联,作者认为Rh+Co/Al2O3上CO加氢生成CH4是经由羰基氢化物-多氢羰基氢化物途径。

Via comprehensive computations, the possibilities of vinylidene and allene intermediates were excluded, and the reaction mechanism was found to contain the following three steps:(1) gold-catalyzed cyclization to give the cyclic intermediate,(2) the cyclic intermediate undergoing a 1,3-H migration to give a more stable intermediate, with the assistance of water-cluster,(3) finially, the 1,2-H or 1,2-silyl migration occuring for generation of the observed product.

通过对各种可能的反应路径的进行计算和比较,排除了亚甲基卡宾和连二烯中间体的可能性,并确定该异构化反应机理包含以下三个步骤:(1)炔丙基吡啶反应在金催化条件下发生分子内的成环得到环状中间体;(2)环状中间体在水分子簇的协助下优先发生1,3-氢迁移反应,异构化得到更为稳定的中间体;(3)最后再进行1,2-氢迁移或是1,2-硅烷基团迁移即得到实验中所观察到的环异构化产物。

HCo 〓-catalyzed hydroformylation and isomerization of allene and propyne Allene hydroformylation favors the linear anti-Markovnikov product in high regioselectivity both kinetically and thermodynamically. The origin of this regioselectivity comes from the enhanced stability of the η〓-allylic intermediate (η〓-CH〓CHCH〓 Co 〓.

HCo〓催化的丙二烯和丙炔氢甲酰化反应及异构化反应 HCo〓催化丙二烯氢甲酰化反应的区域选择性主要由不可逆的丙二烯插入步骤决定,动力学和热力学因素都有利于形成anti-Markovnikov中间物种(η〓-CH〓CHCH〓)Co〓,形成Markovnikov中间物种Co〓是不具有竞争性的。

As compared with traditional esterification, the cost of dehydrogenation was lower than that in process of esterification, and the actual yield reached 82% over 76.9% in esterification.

并将脱氢法与传统的酯化法进行了比较,脱氢法的成本要低于酯化法,且其实际收率达到了82%,超过酯化法的76.9%。

Starting from tetrafuran, 2_(4_Aminosulfonylphenyl)_4H_1,2_thiazine_1_dioxide, an antiepileptic drug with special structure, was obtained via esterification, sulphonation, chloridization, condensation and cyclization.

以四氢呋喃为原料,经酯化、磺化、酰氯化、缩合、环化等步骤,合成了化学名为 4_(四氢_2H_1,2_噻嗪基_2 )苯磺酰胺_S_S_二氧化物的抗癫痫药舒噻嗪,通过IR、1HNMR和元素分析对其结构进行了表

Synthesis of the antiepileptic tiagabine hydrochloride;2. Starting from tetrafuran, 2_(4_Aminosulfonylphenyl)_4H_1,2_thiazine_1_dioxide, an antiepileptic drug with special structure, was obtained via esterification, sulphonation, chloridization, condensation and cyclization.

以四氢呋喃为原料,经酯化、磺化、酰氯化、缩合、环化等步骤,合成了化学名为 4_(四氢_2H_1,2_噻嗪基_2 )苯磺酰胺_S_S_二氧化物的抗癫痫药舒噻嗪,通过IR、1HNMR和元素分析对其结构进行了表

Was founded in 1993, after reorganization of assets in 2003 as "phosphide", more than 500 million fixed assets, the existing 150 staff, of whom technical staff of more than 20, are specializing in the production of phosphate (sodium pyrophosphate, disodium hydrogen phosphate, sodium hexametaphosphate, potassium dihydrogen phosphate, disodium hydrogen phosphate, trisodium phosphate) enterprise.

河南省焦作市磷化实业有限公司(原武陟县兴璋化工有限公司)建于1993年,后经2003年资产重组为&磷化&,公司固定资产500多万,现有职工150人,其中技术人员20多名,是专业生产磷酸盐(焦磷酸钠,磷酸氢二钠,六偏磷酸钠,磷酸二氢钾,磷酸氢二钠,磷酸三钠)企业。

The biological hydrogen is very important to solute the energy crisis and the environmental pollution. Our country works out the organic waste water zymotechnics biological hydrogen technology by the tired of oxygen active sludge and the organic waste water as produces raw material. It is proved by the experiment in HIT. This research was discovered first in our country and foreign and realized the experimental scale non-fossilization mold mushroom spawn for a long time to continue producing the biological hydrogen technology. It also realized the experimental scale continue to produce the hydrogen for a long time. It was a domain significant breakthrough in biological hydrogen.

生物制氢对于解决能源危机和环境污染都具有十分重要的意义,我国以厌氧活性污泥和有机质废水为生产原料的有机废水发酵法生物制氢技术在哈工大通过实验研究验证,该项研究在国内外首创并实现了中试规模连续非固定化菌种长期持续生物制氢技术,并实现了中试规模连续流长期持续产氢,是生物制氢领域的一项重大突破。

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