共查询到17条相似文献,搜索用时 78 毫秒
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标题化合物C18H18N2O2是由亚苄基丙二睛和5,5-二甲基-1,3-环己酮在乙二醇中反应2小时得到,结构通过单晶X-射线衍射法确定,其晶体属单斜晶系,空间群P21/c,Mr=294.34,a = 11.3070(1), b= 9.4750(1),c = 14.919(2) ,β= 99.34(1)埃琕 = 1577.1(3) 3,Z = 4,Dc=1.240Mgm-3,μ=0.082mm-1,F(000)=624, 最终的偏离因子为R=0.0381,wR=0.0961,在分子结构中存在3个环:苯环(A)、吡喃环(B)及与吡喃环稠合的六员环(C)。A与B、A与C及B与C之间的两面角分别为 92.5°、85.7°和8.2°。 相似文献
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离子液体溶剂中5-氧代-5,6,7,8-四氢苯并吡喃衍生物的一种温和有效的合成 总被引:1,自引:0,他引:1
A one-pot synthesis of a series of 5-oxo-5,6,7,8-tetrahydro-4H-benzo-[b]-pyran derivatives via three-component coupling reactions of aldehydes, dimedone and malononitrilein room temperature ionic liquids (RTILs) without any catalyst has been reported. In the meantime, the reuse of ionic liquids and the effect of different ionic liquids as solvent on the reaction have also been investigated. 相似文献
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D. A. Rudenko S. N. Shurov M. I. Kodess M. A. Ezhikova A. N. Vasyanin 《Russian Journal of Organic Chemistry》2012,48(6):799-803
2-Substituted 7,7-dimethyl-5-oxo-5,6,7,8-tetrahydroquinoline-4-carboxylic acids were synthesized by reaction of acyl- and aroylpyruvic acids with 3-amino-5,5-dimethylcyclohex-2-en-1-one. A plausible mechanism of their formation was proposed on the basis of ab initio quantum-chemical calculations. 相似文献
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3-Allenyl-4-aryl-7,7-dimethyl-5-oxo-2-thioxo-1,2,3,4,5,6,7,8-octahydroquinoline-3-carbonitriles were synthesized via [3,3]-sigmatropic
rearrangement of 4-aryl-7,7-dimethyl-5-oxo-2-(prop-2-yn-1-ylsulfanyl)-1,4,5,6,7,8-hexahydroquinoline-3-carbonitriles. The
structure of 3-allenyl-7,7-dimethyl-4-(2-nitrophenyl)-5-oxo-2-thioxo-1,2,3,4,5,6,7,8-octahydroquinolin-3-carbonitrile was
determined by X-ray analysis. 相似文献
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7,7-Dimethyl- and 7-phenyl-2-(4-pyridyl)-5-oxo-5,6,7,8-tetrahydroquinazolines were synthesized in the reactions of 2-formyl-5,5-dimethyl- and 5-phenyl-1,3-cyclohexanediones, respectively, with 4-amidinopyridine. The oxime, thiosemicarbazone, 4-quinazolyl-, nicotinoyl-, isonicotinoyl-, and 2-hydroxybenzoylhydrazones of 2-(4-pyridyl)-5-oxo-7,7-dimethyl-5,6,7,8-tetrahydroquinazoline were obtained. The reduction of this ketone by sodium borohydride leads to the 5-hydroxy derivative. 相似文献