An efficient synthesis of quinazoline derivatives with the aid of low-valent titanium reagent
作者:Daqing Shi、Chunling Shi、Juxian Wang、Liangce Rong、Qiya Zhuang、Xiangshan Wang
DOI:10.1002/jhet.5570420201
日期:2005.3
Quinazolin-4(3H)-ones, 1,2-dihydroquinazolin-4(3H)-ones, 3,4-dihydroquinazolines, imidazo[1,2-c]-quinazolines and 5,6-dihydroimidazo[1,2-c]quinazolines were synthesized by the novel reductive reaction of nitro group, N-H bond and ortho-ester, aldehydes or ketones promoted by the low-valenttitaniumreagent (TiCl4-Zn system). The structures of these compounds were characterized by elemental analysis
喹唑啉-4(3 H)-one,1,2-二氢喹唑啉-4(3 H)-one,3,4-二氢喹唑啉,咪唑并[1,2- c ]-喹唑啉和5,6-二氢咪唑并[1,2 - c ^ ]喹唑啉通过将低价钛试剂(促进的TiCl硝基,NH键和原酸酯,醛或酮的新型还原反应,合成4 -Zn系统)。这些化合物的结构通过元素分析,IR和1 HNMR光谱进行表征,并通过单晶X射线衍射分析进一步证实。
An efficient synthesis of quinazoline-2,4-dione derivatives with the aid of a low-valent titanium reagent
作者:Da-Qing Shi、Guo-Lan Dou、Zheng-Yi Li、Sai-Nan Ni、Xiao-Yue Li、Xiang-Shan Wang、Hui Wu、Shun-Jun Ji
DOI:10.1016/j.tet.2007.07.011
日期:2007.9
A facile synthetic method using low-valenttitaniumreagent (TiCl4/Zn system) to promote the novel reductive cyclization of 2-nitrobenzamides and triphosgene is described. Sequentially, a series of quinazoline-2,4-diones were synthesized in good yields.
One-pot synthesis of imidazo[1,2-<i>c</i>]quinazoline derivatives from nitro-componds reduced by zinc
作者:Da-Qing Shi、Shao-Feng Rong、Guo-Lan Dou、Man-Man Wang
DOI:10.1002/jhet.189
日期:2009.9
An efficient, convenient, one-potsynthesis of imidazo[1,2-c]quinazolines was accomplished in good yields via the novel reductive cyclization of 2-(2-nitrophenyl)-1H-imidazole with isothiocyanates mediated by zinc dust. J. Heterocyclic Chem., (2009).
一种高效,便捷的一锅合成咪唑并[1,2- c ]喹唑啉的新方法是通过新颖的还原环化反应完成的。2-(2-硝基苯基)-1 H-咪唑与异硫氰酸盐的介导是由锌粉尘介导的。J.杂环化学,(2009)。
One-pot synthesis of iimidazo[1,2-<i>c</i>]quinazoline-5(6<i>H</i>)-thione and imidazo[1,2-<i>c</i>]quinazolin-5(6<i>H</i>)-one with the aid of tin(II) chloride
作者:Man-Man Wang、Guo-Lan Dou、Da-Qing Shi
DOI:10.1002/jhet.246
日期:2009.11
An efficient, convenient, one‐pot synthesis of imidazo[1,2‐c]quinazoline‐5(6H)‐thione and imidazo[1,2‐c]quinazolin‐5(6H)‐one was accomplished in good yields via the novel reductive cyclization of 2‐(2‐nitrophenyl)‐1H‐imidazoles with isothiocyanates or isocyanates mediated by SnCl2·2H2O system. J. Heterocyclic Chem., (2009).
高效,方便,一锅合成咪唑并[1,2 - c ]喹唑啉-5(6 H)-硫酮和咪唑并[1,2 - c ]喹唑啉-5(6 H)-一,收率高通过异氰酸酯或SnCl 2 ·2H 2 O系统介导的异氰酸酯对2-(2-硝基苯基)-1 H-咪唑的新型还原环化作用。J.杂环化学,(2009)。
FUEL FOR FUEL CELL, FUEL CELL AND APPLICATION THEREOF
申请人:Kurita Water Industries Ltd.
公开号:EP1705740A1
公开(公告)日:2006-09-27
A fuel cell fuel contains an organic fuel used as a fuel for a fuel cell. The organic fuel is in a form of a solid molecular compound, such as an inclusion compound. The molecular compound can be prepared by contact catalytic reaction of a compound for forming the molecular compound and the organic fuel, and allows a liquid organic fuel to be in a solid compound to store the organic fuel stably in a relatively lightweight form. The molecular compound easily releases the organic fuel by, for example, heating, and the organic fuel is supplied to the fuel electrode of a fuel cell. Thus, the handleability of the fuel cell fuel containing the organic fuel can be improved, and the problems of corrosion, freezing of the fuel, crossover, and so forth can be solved.