文献求助Heat capacities of the mixed-solvents desiccants (glycol

化学文献翻译
Iodine being the least acidifying of all halogens, proton abstraction from 2,6-difluoro-3-iodopyridine (1) occurred initially, i.e. upon 5115 min of exposure to LIDA, almost exclusively at the 5- rather than the 4-position. Trapping with dry ice or iodine provided the 2,6-difluoro-5-iodopyridine-3-carboxylic acid (17; 72%) or the 2,6-difluoro-3,5-diiodopyridine (18; 81%) respectively. However, when the reaction time with LIDA was prolonged to 30 h, reversible return to the starting material 1 set the stage for a sporadic deprotonation at the 4-position. This unleashed instan-taneously a basicity gradient-driven heavy halogenmigration producing the isomeric 2,6-difluoro-3,4-diiodopyridine (19; 80%) after iodination.
The LIDA-promoted deprotonation of (2,6-difluoropyridin-3-yl)trimethylsilane (5) also took place at the 5-position. The intermediate was trapped with dry ice or 1,1,2-trichloro-1,2,2-trifluoroethane to give 2,6-difluoro-5-(trimethylsilyl)pyridine-3-carboxylic acid (20; 98%) or (5-chloro-2,6-difluoropyridin-3-yl)trimethylsilane (21; 97%)respectively. Using iodine chloride, the acid 20 was iododesilylated to the 2,6-difluoro-5-iodopyridine-3-carboxylicacid (17; 96%). Under the same conditions, the chlorosilane 21 gave 3-chloro-2,6-difluoro-5-iodopyridine (15; 93%). The latter compound was converted into the 5-chloro-2,6-difluoropyridine-3-carboxylic acid (22; 91%), by halogen/metal permutation followed by carboxylation.
Condensation of the 5-lithiated (2,6-difluoropyridin-3-yl)trimethylsilane (5) with chlorotrimethylsilane provided the (2,6-difluoropyridin-3,5-diyl)bis(trimethylsilane) (23; 94%)
which reacted with iodine chloride smoothly under double iododesilylation to afford the 2,6-difluoro-3,5-diiodopyridine (18; 93%) whereas the bromodesilylation effected with elemental bromine rigorously stopped after a unilateral displacement producing (5-bromo-2,6-difluoropyridin-3-yl)trimethylsilane (24; 95%). 3,5-Dibromo-2,6-difluoro-pyridine (25; 90%) was found to be accessible only indirectly by subjecting 3-bromo-2,6-difluoro-5-iodopyridylsi-lane (26) to element-specific halogen/metal permutation and subsequent bromination. The latter precursor 26 was readily prepared by iododesilylation of the bromopyridyl-silane 24 in 91% yield
不要机译,翻得好加分

关于城乡居民消费结构差异英文文献
最新写论文,需要一篇关于城乡居民消费结构差异的英文文献,不用太详细,只要有关就可以,手里有的朋友帮忙发一下啊,

化学英文文献翻译
Abstract
Cu(BZA)2(EtOH)0.5(1)was generated by the reaction of copper(II hydroxide with benzoic acid(BZAH).[Cu(TBZH)2(BZA)]-
(BZA·0.5TBZH．H2O(2)and[Cu(2-PyBZIMH)(2-PyBZIM)(BZA)]·1.66EtOH(3)were obtained when 1 reacted with Thiabendazole
(TBZH)and 2-(2-pyridyl)benzimidazole(2-PyBZIMH),respectively.[Cu(BZA)2(phen)(H2O)](4)was isolated from the reaction of ben-
zoic acid and 1,10-phenanthroline(phen)with copper(II)acetate dihydrate.Molecular structures of 2,3 and 4 were determined crystal-
lographically.2 and 3 are hydrogen bonded dimers and trimers,respectively.The copper centres in complexes 2 and 3 are bis-chelate derivatives that have N4O ligation and their geometry is very similar being approximately square-pyramidal.However whereas in complex 2 both TBZH ligands are neutral in 3 one of the 2-PyBZIMH chelators is deprotonated on each copper.The structural results for 4 represent a re-examination of this crystallographically known compound for which no hydrogen atom coordinates have been previously reported.It crystallises as a hydrogen bonded dimmer and is a mono-chelate of phen with each copper centre possessing N2O3 ligation and square pyramidal geometry.The catalase and superoxide dismutase(SOD)activities of the four complexes along with those of the known phenanthroline complexes[Cu(mal)(phen)2]and[Cu(phendione)3](ClO4)2(malH2=malonic acid and phendione=1,10-phenan-throline-5,6-dione)were investigated.Complexes 1–4,the metal free ligands and a simple copper(II)salt were assessed for their cancer chemotherapeutic potential against the hepatocellular carcinoma(Hep-G2)and kidney adenocarcinoma(A-498)cell lines.TBZH,2-PyB-ZIMH and benzoic acid when uncoordinated to a metal centre offer poor chemotherapeutic potential.copper(II)benzoate is significantlymore active than the free acid.The bis-chelate derivatives[Cu(TBZH)2(BZA)](BZA·0.5TBZH·H2O(2)a nd[Cu(2-PyBZIMH)(2-PyB-ZIM)(BZA)]·1.66EtOH(3)elicit a significant cytotoxic response to the cancer cell lines tested.Replacing TBZH and 2-PyBZIMH with phen to give[Cu(BZA)2(phen)(H2O)](4)does not significantly increase the anti-cancer activity.
2007 Elsevier Inc.All rights reserved.
1.Introduction
Cancer,of which there are over 100 di?erent forms,is a leading cause of death.The clinical success of cisplatin,and related platinum based drugs,as anti-cancer agents constitutes the most impressive contribution to the use of metals in medicine[1].However major problems associated with these anti-cancer metallo-drugs include serious toxicity and other side-effects,and major problems with resistance.New potent and selective anti-cancer drugs are urgently required.

文献格式说明
Matouk IJ, Abbasi I, Hochberg A, Galun E, Dweik H, Akkawi M.
Eur J Gastroenterol Hepatol. 2009 Jun;21(6):688-92.
第一行是作者,Eur J Gastroenterol Hepatol指的是杂志,对吧?2009 Jun;21(6):688-92.中的(6)是第六卷的意思吗?688-92是指688到692页吗?

求助poultry science文献,
写文章急需,祝国庆快乐!
A meta-analysis of the feed intake and growth performance of broiler chickens challenged by bacteria
Poultry Science (May 2014) 93 (5):1149-1158
是不是2014年的文献还不能下载呀,哪位能帮下忙,