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Zinc-Mediated Addition of Bromoacetonitrile to Aldimines

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Chinese Chemical Letters 1998年第1期9卷 5-6页

作者： Xing Hua SUN Lei WANG Yong Min ZHANG(department of chemistry, Hangzhou University, Hangzhou 31002.)(Visiting scholar from Huaibei Coal {2. college.)(To whom correspondences should be addressed.) Hangzhou Univ Dept Chem Hangzhou 310028 Peoples R China

In the presence of chlorotrimethylsilane, zinc-mediated addition of bromoacetonitrile to aldimines gives beta-aminonitriles in THF with good yields.

关键词： zinc-mediated addition bromoacetonitrile aldimines

TiSiW_(12.O_(40)/TiO_2.化合成肉桂酸系列酯

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石油化工 2003年第3期32卷 230-233页

作者：杨水金余协卿梁永光孙聚堂武汉大学化学与分子科学学院湖北武汉430072 湖北师范学院化学与环境工程系湖北黄石435002

以固载杂多酸盐TiSiW12.40/TiO2.多相催化剂,对以乙醇、正丙醇、正丁醇、正戊醇和肉桂酸为原料合成肉桂酸系列酯的反应条件进行了研究。实验表明,TiSiW12.40/TiO2.合成肉桂酸系列酯的良好催化剂,较系统地研究了醇酸摩尔比、催化剂用... 详细信息

以固载杂多酸盐TiSiW12.40/TiO2.多相催化剂,对以乙醇、正丙醇、正丁醇、正戊醇和肉桂酸为原料合成肉桂酸系列酯的反应条件进行了研究。实验表明,TiSiW12.40/TiO2.合成肉桂酸系列酯的良好催化剂,较系统地研究了醇酸摩尔比、催化剂用量、反应时间诸因素对酯收率的影响。最佳反应条件为n(醇)/n(酸)=4/1或9/1,催化剂用量为反应物料总量的2.0%,反应时间为1 5～3 0h。上述条件下,肉桂酸乙酯的产率为58 7%,肉桂酸正丙酯的产率为62.0%,肉桂酸正丁酯的产率为81 2.,肉桂酸正戊酯的产率为93 3%。

关键词：酯化反应催化剂 TiSiW12.40/TiO2 催化合成肉桂酸系列酯

关于制订《小学(初等)教育专业教学计划》的思考

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咸宁学院学报 2003年第4期23卷 8-10页

作者：刘旭罗文丽咸宁学院教育系湖北咸宁437005 曲靖师范学院教育心理教研室云南曲靖655000

针对小学生的特点及其教师素质要求的特殊性,深入分析了"大专小学教育专业"的内涵及其度的规定,指出"小学教育专业"的专业属性主要体现为"教育",其度的规定也表现为更强的教育专业素质而不是更高的学科专业素质;然后,依据多方面的要求,... 详细信息

针对小学生的特点及其教师素质要求的特殊性,深入分析了"大专小学教育专业"的内涵及其度的规定,指出"小学教育专业"的专业属性主要体现为"教育",其度的规定也表现为更强的教育专业素质而不是更高的学科专业素质;然后,依据多方面的要求,阐述了综合性"小学教育专业"的基本思路与特点。

关键词：小学教育教师教育专业性教学计划

A NEW PEROXYNIOBIUM-CONTAINING POLYOXOANION, P_(2.W_(1)7(NbO_(2.)O_(61)^(7-)SYNTHESIS AND CHARACTERIZATION OF STURCTURE

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Chinese Chemical Letters 1994年第8期5卷 719-720页

作者： Lun Yu QU(department of chemistry, Northeast {2. University, ChangChun 13002.)Jin Bo FANG(department of Biochemistry, Jilin Medical college, Jilin 132.01)Jian GONG Biao CHEN(department of chemistry, Jilin Medical college, Jilin 132.01)

The Synthesis and characterization of the previously unknown P2.17(NbO2.O , a new composition containing one NbvO2.peroxide group, was described. O of the molecule was detected by I-/S2.- titration. the Structure of t...

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铁基非晶合金的热分析与晶化速率的对比分析

金属功能材料 2002年第4期9卷 30-33页

作者：周效锋陶淑芬刘佐权曲靖师范学院物理系云南曲靖655000 云南大学材料系昆明650091

对以Fe73 5Cu1Nb3 Si13 5B9为代表的非晶合金的原带和经 5 2.0℃等温退火处理的样品以及激波处理样品作了对比DSC分析。着重结合晶化机理对样品在上述处理中的晶化速率作了对比和讨论。

关键词：铁基非晶合金热分析晶化速率对比分析

ALLYLATION OF AROMATIC AMINES VIA ALLYLDIALKYLTELLURONIUM SALTS

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Chinese Chemical Letters 1993年第10期4卷 869-870页

作者： Cai Ding XU Xian HUANG department of chemistry,Hangzhou University,Hangzhou 31002..Shou Mao LU department of chemistry,Xianning normal college,Hubei 437005.

Allyldialkyltelluronium bromides were treated with aromatic amines in 1,2.dichloroethane,readily giving allyl aryl amines in excel- lent *** method provides a convenient one-pot reaction for the synthesis of allylic a... 详细信息

关键词： ZC HZ ALLYLATION OF AROMATIC AMINES VIA ALLYLDIALKYLTELLURONIUM SALTS CIC Res Cl VIA

Knockdown of CD146 reduces the migration and proliferation of human endothelial cells

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Cell Research 2006年第03期16卷 313-318页

作者： Yanyong Kang~(1,3) Fengcai Wang~(1,2. Jing Feng~1 Dongling Yang~1 Xu Yang~3 Xiyun Yan~11 National Laboratory of Biomacromolecules,Institute of Biophysics,Chinese Academy of Science Beijing 100101,China 2.chemistry department,Anyang teacher's {2.,Anyang 455000,China 3 {2. of Life Science,Central China normal University,Wuhan 430079,China NationalLaboratoryofBiomacromolecules InstituteofBiophysicsChineseAcademyofScienceBeijing100101China chemistrydepartment Anyangteacher'sCollegeAnyang455000China

Our previous study has demonstrated that CD 146 molecule is a biomarker on vascular endothelium,which is involvedin angiogenesis and tumor *** the mechanism behind is not *** we have for the first time devel-oped a novel CD146 blockade system using CD146 siRNA to study its function on endothelial *** data showedthat CD146 siRNA specifically blocked the expression of CD146 on both mRNA and protein levels,leading to thesignificant suppression of HUVEC proliferation,adhesion and *** results demonstrate that CD146 playsa key role in vascular endothelial cell activity and angiogenesis,and CD146 siRNA can be used as a new inhibitor foranti-angiogenesis therapy.

关键词： small interfering RNA adhesion molecule CD 146 vascular endothelial cell

Theoretical studies on ammonia oxide and its unimolecular reactions

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Chinese Journal of chemistry 1990年第5期8卷 405-411页

作者： HAN,Yun-Zhu ZHU,De-Zhong department of chemistry,Liaocheng Teachers Coilege,Liaocheng ShandongZHAO,Cheng-Da department of chemistry,Northeast normal University,Changchun department of chemistry Liaocheng Teachers College Liaocheng Shandong department of chemistry Northeast Normal University Changchun

The unimolccular reactions of ammonia oxide H_3NO,isomerization and dehydrogenation, are investigated by ab initio MO calculations with the 4-31G basis *** geometries and energies of the reactant,transition states and products have been determined on the singlet potential energy sur- *** reaction ergodography along the intrinsic reaction coordinate(IRC)for the two reactions have been *** vibrational frequency correlation diagram of the two reactions are analyzed along the IRC.

关键词： IRC Theoretical studies on ammonia oxide and its unimolecular reactions mode

THEORETICAL STUDIES ON THE REACTION MECHANISM OF AMMONIA WITH FORMALDEHY DE

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Chinese Chemical Letters 1990年第2期1卷 101-104页

作者： Yun Zhu HAN Qiu Chang ZHAO department of chemistry,Liaocheng Teachers {2.,Liaocheng Shandong 2.2.59 Cheng Da ZHAO department of chemistry,Northeast normal University,Changchun,13002.

The reaction mechanism of ammonia with formaldehyde was investigated by using the intrinsic reaction coordinate(IRC)method on the ab initio RHF/STO-3G basis set. our results indicate that the reaction proceeds in two stages:the first step yields the molecular complex and the second one is the rearrangement from molecular complex to the reaction proauct.

关键词： IRC THEORETICAL STUDIES ON THE REACTION MECHANISM OF AMMONIA WITH FORMALDEHY DE