沉痛悼念徐僖院士

中国科学院院士、我国高分子材料学科的开拓者和奠基人之一、四川大学教授徐僖先生,因病于2013年2月16日在成都逝世,享年93岁。徐僖先生自《化学研究与应用》创刊之日起就受聘为本刊顾问,对本刊的发展贡献良多。     

浙江大学高分子科学与工程学系

1　沿革　浙江大学高分子学科历史悠久 ,享誉中外。我国众多的高分子科学家如王葆仁院士、冯新德院士、钱人元院士、徐僖院士、沈家骢院士、沈之荃院士等均毕业或执教于浙江大学。近 2 0年来 ,浙江大学培养了一大批年轻的高分子科学专门人才 ,美国芝加哥大学俞陆平教授、澳大利亚科学院戴黎明教授、日本北海道大学龚剑萍教授就是杰出代表。1 992年 ,在化学系、材料系和化工系的高分子专业的基础上 ,组建了高分子科学与工程学系 ,是我国第一个包含高分子化学、高分子材料、高分子反应工程专业的理工结合型系。 1 997年 ,高分子反应工程专业重…     

浙江大学高分子科学与工程学系

浙江大学高分子学科历史悠久 ,蜚声中外 ,被誉为“中国高分子科学家的摇篮”。我国高分子学界著名学者王葆仁院士、冯新德院士、钱人元院士、徐僖院士、浓家骢院士、沈之荃院士、杨士林教授、于同隐教授、潘祖仁教授等均毕业或执教于浙江大学。近 2 0年来 ,浙江大学培养了一大批年轻的高分子科学专门人才 ,美国芝加哥大学俞陆平教授、澳大利亚科学院戴黎明教授、日本北海道大学龚剑萍教授就是杰出代表。 1992年 ,在化学系、材料系和化工系中的各个高分子方向的基础上 ,组建了我国第一个集高分子化学、高分子材料、高分子反应工程方向为一体…     

深情怀念中国科学院院士徐僖先生北大核心CSCD

徐僖先生是中国共产党党员,忠诚的爱国主义者,九三学社社员,杰出的科学家,中国科学院院士、英国皇家化学会会士,我国高分子材料学科的开拓者和奠基人之一,第三、五、六、七、八届全国人大代表,     

取代二苯醚的新合成反应研究

取代二苯醚是一类重要的高聚物单体，用于制备耐高温塑料、绝缘薄膜以及高强度、高模量、低延伸的液晶纤维等，在国防工业和民用工业上有着宽广的前途。因此研究取代二苯醚的合成方法对我国开发新型的高分子材料有着重要意义。合成取代二苯醚的方法，归纳起来有二     

第33届IUPAC国际高分子讨论会评述

第33届国际纯粹与应用化学学会高分子讨论会(33rd IUPAC International Symposium on Macromolecules)于1990年7月8日至7月13日在加拿大蒙特利尔举行。44个国家和地区近3000名学者参加了讨论会。中国代表10人,其中成都科技大学徐僖教授和广州中山大学李卓美教授是大会特邀报告人。此外,不少中国留学生参加了会议。会议交流论文1627篇,其中大会报告6篇,高分子材料48个专题组822篇,高分子物理和化学     

2004年全国高分子材料科学与工程研讨会简报

由中国化学会、中国机械工程学会和中国材料研究学会联合主办,华东理工大学材料科学与工程学 院和清华大学高分子研究所联合承办的2004年全国高分子材料科学与工程研讨会,于2004年10月 26日至29日在上海市举行。 来自全国17个省市的高等院校、科研院所、产业部门共计57个单位的338名代表出席了会议,另 有部分海外高分子界同仁应邀参加了会议。大会开幕式由华东理工大学材料科学与工程学院院长林嘉 平教授主持。徐僖院士、黄葆同院士、中国化学会高分子学科委员会常务副主任徐懋教授、中国机械工 程学会材料分会会长谢锡善教授、华东师范大学副校长陈群教授、国家自然科学基金委董建华、金祖亮     

1989年全国高分子学术论文报告会在成都举行

由中国化学会高分子委员会主持召开的全国高分子学术论文报告会,于1989年11月14～18日在成都召开。大会由这次筹备委员会主任、成都科技大学徐僖教授负责主持,高分子委员会主任、中国科学院化学研究所钱人元教授致开幕词;高分子委员会副主任、北京大学冯新德教授做会议总结报告。     

刊首语-深情怀念中国科学院院士徐僖先生北大核心CSCD

徐僖先生是中国共产党党员,忠诚的爱国主义者,九三学社社员,杰出的科学家,中国科学院院士、英国皇家化学会会士,我国高分子材料学科的开拓者和奠基人之一,第三、五、六、七、八届全国人大代表,国务院特殊津贴专家,九三学社第六、七、八届中央委员会委员,原成都科技大学副校长、原高分子材料工程国家重点实验室主任及学术委员会主任,四川大学教授、高分子研究所所长.     

祝贺徐僖教授八十寿辰

徐僖教授 192 1年 1月 16日生于江苏省南京市 ,是我国著名高分子材料科学家 ,中国科学院院士。 1944年毕业于浙江大学化工系 ,获工学学士学位 ,1948年获美国李海大学 (ＬｅｈｉｇｈＵｎｉｖｅｒｓｉｔｙ)科学硕士学位。现任四川大学(原成都科技大学 )教授、高分子研究所所长 ,上海交通大学教授、高分子材料研究所所长 ,《高分子材料科学与工程》、《油田化学》期刊主编。兼任浙江大学、西安交通大学、北京化工大学、南京化工大学、华南理工大学、华中理工大学等 10余所高校教授 ,《高分子学报》、《化工学报》、《Ｉｎｔｅｒｎａｔｉｏｎａ…     

二氧化碳和丙烯直接合成甲基丙烯酸的NiPMo/TiO2催化剂的研究

用溶胶-凝胶法以磷钼酸(MPA)的镍盐溶液水解钛酸四丁酯制备了NiPMo/TiO2催化剂.使用ICP、 XRD、 TG-DTA、 IR、 TPD-MS和微反应技术研究了催化剂的化学组成、热稳定性、化学吸附性质和催化反应性能.杂多钼酸盐与TiO2通过O2-在TiO2表面发生了键合.在623 K下,杂多阴离子仍保持原有的Keggin结构.CO2在Lewis酸位Ni(Ⅱ)和Lewis碱位Ni-O-Mo的桥氧协同作用下生成CO2卧式吸附态Ni(Ⅱ)←O-(CO)←(O--Ni).丙烯有多种吸附态在催化剂上吸附.在563 K、 1 MPa和空速1500 h-1的反应条件下,丙烯的摩尔转化率为3.2%,产物MAA选择性为95%.     

Toward new camptothecins. Part 6: Synthesis of crucial ketones and their use in Friedländer reaction

In the context of the preparation of camptothecin and luotonin A analogs, the synthesis of some key keto-precursors and their use in Friedländer condensation are described. This paper also focuses on the stability of these keto intermediates and emphasizes the major differences between indolizinones and pyrroloquinazolinones series. Noteworthy is also the report of some original structures isolated as by-products of some experiments.     

α-Amino acid derived enaminones and their application in the synthesis of N-protected methyl 5-substituted-4-hydroxypyrrole-3-carboxylates and other heterocycles

A new and simple synthesis of novel N-protected methyl 5-substituted-4-hydroxypyrrole-3-carboxylates, which exist in equilibrium with their 4-oxo tautomers, has been developed in two steps starting from N-protected α-amino acids. The key intermediates are enaminones, which can also be isolated, characterized, and used for the construction of other functionalized heterocycles, before they spontaneously decompose to pyrrole products. 4-Hydroxypyrroles are prone to partial aerial oxidation but can be efficiently alkylated or reduced to stable polysubstituted pyrrolidine derivatives.     

Specific intramolecular aromatic CH insertion of diazosulfonamides

The chemoselectivity in the intramolecular CH insertion of various diazosulfonamides has been experimentally studied. The results reveal that the aliphatic 1,4-, 1,5-, or 1,6-C(sp³)?H insertions of diazosulfonamides are not accessible, while the aromatic 1,5-C(sp²)?H insertion can be realized specifically by adjusting the diazo-adjacent group. In addition, the general chemoselectivities in the intramolecular CH insertions of diazosulfonyl compounds are summarized. Generally, diazosulfones undergo both aromatic 1,5-C(sp²)?H and aliphatic 1,5- and 1,6-C(sp³)?H insertions, while diazosulfonates undergo aliphatic 1,5- and 1,6-C(sp³)?H insertions. However, diazosulfonamides only undergo aromatic 1,5-C(sp²)?H insertion.     

CoFe2O4自形成磁性液体场致结构化对磁化的影响

The Langevin paramagnetic theory can’t describe the relation between magnetization of ferrofluids and applied magnetic field. The structuralization of ferrofluids, which is considered the main influence factor of the magnetization, is regarded. The part of magnetization works is deposited when the structure is forming. This action influences the magnetization of ferrofluids directly or indirectly. On the base of the “compressing” model, the Langevin function that usually describes the magnetization of ferrofluid is modified, and a well-fitted curve is obtained. An equation of the relation between the equivalent volume fraction after being “compressed” and the intensity of magnetic field is discovered, which approximately describes the process of magnetization. The relation between the approximate initial susceptibility and the volume fraction can be obtained from modified formula.     

KMnO4-mediated oxidative CN bond cleavage of tertiary amines: Synthesis of amides and sulfonamides

KMnO₄-mediated oxidative CN bond cleavage of tertiary amines producing secondary amine was introduced, which was trapped by electrophiles (acyl chloride and sulfonyl chloride) to form amides and sulfonamides. The reaction could take place at mild condition, tolerating a wide range of function groups and affording products in moderate to excellent yields.     

Highly regioselective Buchwald–Hartwig amination at C-2 of 2,4-dichloropyridine enabling a novel approach to 2,4-bisanilinopyridine (BAPyd) libraries

The highly regioselective Buchwald–Hartwig amination at C-2 of the cheap and readily accessible reagent, 2,4-dichloropyridine with a range of anilines and heterocyclic amines is described. This new methodology is robust and provides a facile access to 4-chloro-N-phenylpyridin-2-amines on 0.25 mol scale. These intermediates undergo a further Buchwald–Hartwig amination at higher temperature to enable rapid exploration of the chemical space at C-4 and to provide a library of 2,4-bisaminopyridines.     

Chemistry of heterocyclic compounds at the A. E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences, over 50 years (Review)

The review contains a concise historical account and information on the most significant researches undertaken by the staff at the A. E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences on the Chemistry of Heterocyclic Compounds. Dedicated to Academician of the Russian Academy of Sciences B. A. Trofimov on his 70th jubilee. Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 10, pp. 1443–1502, October, 2008.     

N-Heterocyclic carbene-palladacyclic complexes: synthesis,characterization and their applications in the C-N coupling and α-arylation of ketones using aryl chlorides

N-Heterocyclic carbene-palladacyclic complexes 3 were successfully achieved in a one-pot procedure under mild conditions. The structure of 3a was unambiguously confirmed by X-ray single crystal diffraction and it was an active catalyst in the Buchwald-Hartwig amination and α-arylation of ketones even at very low catalyst loadings (0.01?mol%).     

Iodine-mediated oxidative Pictet-Spengler reaction using terminal alkyne as the 2-oxoaldehyde surrogate for the synthesis of 1-aroyl-β-carbolines and fused-nitrogen heterocycles

An efficient iodine-mediated oxidative Pictet-Spengler reaction in dimethyl sulphoxide (DMSO) using terminal alkynes as the 2-oxoaldehyde surrogate for the synthesis of aryl (9H-pyrido[3,4-b]indol-1-yl)methanones is described. The scope of the protocol includes the total synthesis of Fascaplysin, Eudistomins Y₁ and Y₂. The methodology is extended for preparing pyrrolo[1,2-a]-quinoxaline and indolo[1,5-a]quinoxaline derivatives. The utility of 1-aroyl-β-carbolines was demonstrated by performing palladium-catalyzed β-carboline directed ortho-C(sp2)-H functionalization of the phenyl ring with thiomethyl (SMe) group using DMSO as source and for accessing 4-aryl-canthin-6-ones.