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(R)-2-{[4-(3-甲氧基丙氧基)-3-甲基吡啶-2-基]甲基亚硫酰基}- 1H-苯并咪唑的合成 总被引:1,自引:0,他引:1
以2,3-二甲基吡啶为起始原料, 经过11步反应, 不对称合成了质子泵抑制剂的关键中间体: (R)-2-{[4-(3-甲氧基丙氧基)-3-甲基吡啶-2-基]甲基亚硫酰基}-1H-苯并咪唑. 研究了用手性高效液相色谱拆分对映体、测定产品光学纯度的方法, 结果表明目标产品的ee值达到99%. 通过IR, UV, MS以及1H NMR分析对重要中间体和目标产品进行了结构鉴定. 相似文献
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以3,5-二溴吡啶和对甲基苯硼酸为原料,醋酸钯为催化剂,经Suzuki偶联反应合成了3,5-二(4-甲基苯基)吡啶(1),收率73%,其结构和性能经1H NMR, 13C NMR, IR, 元素分析, UV-Vis, FL和X-射线单晶衍射表征。结果表明:1(CCDC: 1509844)属正交晶系,空间群P212121,晶胞参数a=6.447 8(12) , b=7.240 2(14) , c=29.890 0(6) ,β=90°。1为非平面刚性共轭分子,荧光量子产率13.9%。 相似文献
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K. R. Rowan E. M. Holt 《Acta Crystallographica. Section C, Structural Chemistry》1996,52(6):1565-1570
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S. E. Semenov A. M. Churakov L. F. Chertanova Yu. A. Strelenko S. L. Ioffe V. A. Tartakovskii 《Russian Chemical Bulletin》1992,41(2):277-279
By reaction of 4-amino-1,2,4-triazole with 1-nitroso-2,4,6-trichlorobenzene in the presence of excess dibromoisocyanurate the title compound was obtained.N. D. Zelinskii Institute of Organic Chemistry, Russian Academy of Sciences, 117913 Moscow. Translated from Izvestiya Akademii Nauk, Seriya Khimicheskaya, No. 2, pp. 362–364, February, 1992. 相似文献
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Xiao Chuan Luo Guo Hua Chen Hui Bin Zhang Wen Long Huang 《中国化学快报》2008,19(1):59-60
2-[2-(2,2,2-Trifluoroethoxy)phenoxy]ethanamine is the key intermediate of Silodosin, the α1-adrenoceptor antagonist for the treatment of benign prostatic hyperplasia. In order to obtain this intermediate, we developed a novel synthetic route by utilizing 2- nitrochlorobenzene as the starting material via O-alkylation, reduction, diazotization, acidolysis, etherification, condensation and hydrazinolysis. The highlight of this method lies on its convenience and economy in accessing this intermediate. 2007 Guo Hua Chert. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved. 相似文献