首页 | 本学科首页   官方微博 | 高级检索  
相似文献
 共查询到20条相似文献,搜索用时 46 毫秒
1.
《中国化学》2004,22(12):1463-1470
BAI, Zhu, 498 BALA, Muhammad D., 568 BAO, Meng, 325 BI, Wen-Hua, 271 BIAN, Gui-Rong, 445 CAI, Chen-Xin, 167 CAI, Dong-Mei, 1425 CAI, Feng, 1019 CAI, Ming-Zhong, 859; 1417 CAI, Qing-Hai, 422 CAI, Rui-Fang, 935 CAI, Tie-Jun, 831 CAI, Xiang-Hai, 199 CAI, Zheng-Ting, 505 CAO, Jian, 1436 CAO, Qian-Yong, 1283 CAO, Rong, 51; 271 CAO, Shu-Xia, 870 CAO, Wei-Guo, 1174 CAO, Xiao-Ping, 467; 1344 CAO, Ya-Li, 1288 CAO, Yong, 599; 782 CAO, Zhi-Long, 668 CHAN, Alber…  相似文献   

2.
AUTHOR INDEX     
CAI, Ming-Zhong, 859CAI, Tie-Jun, 831CAO, Shu-Xia, 870CAO, Yong, 782CHEN, Chun-Xue, 816CHEN, Hai-Feng, 882CHEN, Lang-Xing, 804CHEN, Zhang-Ping, 779CHEN,San-Ping, 787CHENG, Zhen-Ping, 888DENG, Qian, 831DUANMU, Chuan-Song, 77FAN, Bo-Tao, 882FAN, Kang-Nian, 782FAN, Xue-Zhong, 787FANG, Chun, 816FANG, De-Cai, 867FENG, Jiang-Hua, 849GAO, Hong-Wen, 798GAO, Sheng-Li, 787GAO, Xin, 837GUAN, Wen-Chao, 877GUO, Hong-You, 816HE, He-Yong, 782HE, Lan, 867HE,…  相似文献   

3.
《天然气化学杂志》2007,16(4):447-448
A Abedini,M.,121 Aishah,A.J.,273 Aminshahidi,B.,22 An,Xia,130,244,354 Ao,Xianquan,6 Ao,Yong,86 Ayatollahi,Sh.,293 B Bahadori,Alireza,16,349 Bokade,V.V.,37,42,186 C Cai,Xiulan,31 Cao,Fahai,308 Cao,Jun,64 Cao,Weiliang,377 Cao,Zuogang,70,428 Chen,Jixiang,148,389 Chen,Shengzhou,162,409 Chen,Xirong,409  相似文献   

4.
若缺钼,则伤骨,常见到,牙齿落,再发展,骨质变,既松软,骨质变,既松软,又无力,若不治,还会得,白血病,食道癌,此病得,初难找,无病因,无脉象,成年人,不明显,幼儿们,最突出,早落齿,迟行走,食疗法,最应手。其一法:麦饭石,五百克,经炮制,研为末,入水缸,过滤水,经饮用,数日愈。其二法:取卤碱,五克整,放水内,加板栗,五百克,煮熟后,放包内,随常吃,数日后,病痊愈。其三法:取柿子,经常吃,每日吃,仅三个,若多吃,伤胃液,经数日,病痊愈。其四法:经常吃,核桃仁,花生果,石榴仁,既吃生,又吃熟,经数日,病痊愈。服此药,必需忌,砷化物,如雄黄,石硫磺,加雄黄,切忌注,端阳节,雄黄酒,喝不得。  相似文献   

5.
若缺铁,生贫血,减智力,得痴呆,肝脾肿,无神色,诸细胞,易能缺,一缺乏,肤变白,早治疗,速收效,食疗法,是先决.其一法:取生铁,一百克,先净后,加大枣,放二两,入水煮,去生铁,喝完汤,将大奉,随身装,时时吃,日一剂,二月愈.  相似文献   

6.
正若缺钼,则伤骨,常见到,牙齿落,再发展,骨质变,既松软,骨质变,既松软,又无力,若不治,还会得,白血病,食道癌,此病得,初难找,无病因,无脉象,成年人,不明显,幼儿们,最突出,早落齿,迟行走,食疗法,最应手。其一法:麦饭石,五百克,经炮制,研为末,入水缸,过滤水,经饮用,数日愈。其二法:取卤碱,五克整,放水内,加板栗,  相似文献   

7.
CAO, Rong, 51 LIN, Zheng-Zhong, 51 WANG, Run-Wei, 9 CHAU, Foo-Tim, 85 LIU, Fu-Chen, 55 WANG, You-Wei, 114 CHEN, Dao-Feng, 103 LIU, Hong-Wen, 109 WU, Jian-Yong, 85 CHEN, Jiu-Tong, 64 LIU, Xiao-Hong, 75 WU, Li-Zhu, 1 CHEN, Li, 92 LIU, Xiao-Juan, 38 WU, Li-Zhu, 114 CHEN, Yi, 100 LIU, Xiao-Lan, 75 WU, Wei- Rong, 24 CHIU, Ming-Hua, 92 LIU, Ying-Chun, 60 WU, Yu-Lin, 92 LIU, Zhi-Hong, 14 WU, Zi-Xin, 1 DI, Yan, 9 LU, Gui-E, 19 DUAN, Li-Ying, 55 LU, M…  相似文献   

8.
Ab ini~io,tetraboron halogenide,muIti-center bonds,localized molecular orbitals 305N-Acetylguanine,acyclonucleoside,alkylation, earba-DHPG 85Activation energy,temperature,CAgC,Cn,ag- gregation 179Acyclonucleoside,alkylation,N-acetylguanine, carba二DHPG 85Adamantance,zeoHte,catalysis,ion-exchange 52Aggregation,temperature,activation energy, CAgC.Cn 179 ’Aldehydes, 1,1,1-trichloto-2,2,2.trifluoroethane, stannous halides,addition,Jones oxidation, ketones 183Alkylation,acyclonucleoside,…  相似文献   

9.
《中国化学》2006,24(12):1810-1818
ALI,A.,1 547ALI,Syed Mashhood,665AN,Yu,401;1 375AN,Zhong·Wei,1 754ANBIA,Mansur,1026AO,Li一Mei,253ASMAT)Fahmeena,665ATAV,Ulfet,603BAI,Chen一Xi,1 639BAI,Ji·Hai,360BAI,Zhu,1 24BALUJA,ShiPra,1327BAO,Han,481BAO,Hua一Ying,355BAO,Ren一Lie,1 001BAO,Xiao一Ling,85BERNATH,G巨bor,1792Bl,Cai一Feng,371B IAN,Liu一Jiao,653BLECHERT,Siegfried,1080BOKROS,Attila,1792CHANG,Jia一Zhong,1255CHANG,Lih一Wei,1238CHANG,Li·Qun,1 214CHEN,Bao一Quan,99CHEN,Bing,463CH…  相似文献   

10.
Abdulkadir, H.K.Akhtar, F.Alam, M.M.Bai, Chun-liBao, Jian-wenBao, Yong-zhongBordallo, E.Cai, Jian-guoCao, Wei-xiaoCao, Yan-xiaCao, YongCarrot, ChristianChand, S.Chen, Chuan-fuChen, Jian-dingChen, Jin-longChen, Ling-wuChen, Qing-yongChen, Tian-luChen, Xiang-baoChen, Xiao-fangCheng, Guo-xiangCheng, LinCheng, Shi-yuanCheng, Yi-xiangChowdhury, M.A.Dai, Qing-wenDai, Xin-huaDavis, Kelly A.Deng, Hong-taoDeng, Xian-moDong, Hong-chenDong, Yu-pingDu, MiaoDu, Rong-niDuan, Qin…  相似文献   

11.
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%.  相似文献   

12.
Different approaches for the synthesis of 1-benzyloxypyrazin-2(1H)-one derivatives from simple amino acids have been investigated. A library of 33 precursors for the preparation of N-hydroxy pyrazinones was obtained in moderate to good yields.  相似文献   

13.
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.  相似文献   

14.
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.  相似文献   

15.
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.  相似文献   

16.
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.  相似文献   

17.
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.  相似文献   

18.
A general synthesis of previously unknown semicarbazone-based α-amidoalkylating reagents, 4-(tosylmethyl)semicarbazones, has been developed. The synthesis involved three-component condensation of semicarbazones of aliphatic or aromatic aldehydes with the same or other aldehydes and p-toluenesulfinic acid. The scope and limitations of this reaction were investigated. The compounds obtained were demonstrated to be an efficient α-(4-semicarbazono)alkylating agents. They were reacted with H- (sodium borohydride), O- (sodium methylate), S- (sodium phenylthiolate), N- (pyrrolidine, sodium succinimide), P- (trialkyl phosphites), and C-nucleophiles (sodium diethyl malonate) to give the corresponding products of the tosyl group substitution, 4-substituted semicarbazones, including analogues of nitrofurazone. Among the prepared compounds tested in vitro for antibacterial and antifungal activity, three nitrofuryl-containing semicarbazones exhibited high biological activities with minimum inhibitory concentration (MIC) values of 8–32 μg/mL.  相似文献   

19.
Zhanhui Yang  Shiyi Yang  Jiaxi Xu 《Tetrahedron》2017,73(23):3240-3248
Regiospecific and direct imidation of the methyl C(sp3)–H bond of thioanisoles is realized under mild and metal-free conditions with N-fluorobis(benzenesulfonyl)imide as an oxidant and nitrogen source. Proposed mechanism suggests that thionium ion intermediates and a Pummerer-type reaction are involved. The imidation has advantages such as high step-economy, excellent functionality tolerance, and regiospecificity, giving structurally diverse imidation products.  相似文献   

20.
A small library of new chiral bidentate hydroxyalkyl-imidazolium salts 1 is conveniently synthesized on multi-gram scale from inexpensive and commercially available chiral pool amino acids. The corresponding carbenes, generated by deprotonation of imidazolium salts 1, in combination with palladium(II) chloride were tested in the Mizoroki–Heck coupling reaction. The most significant results in terms of yields and reactivities were achieved with low catalyst loading. The catalytic activities of these imidazolium salts were also investigated in the asymmetric addition of diethylzinc to benzaldehyde. The use of MgO nanoparticles as an additive in conjunction with these ligands played a crucial role in increasing the efficiency of these reactions.  相似文献   

设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号