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Synthesis of new 1,2,4-oxadiazolidin-5-ylthiophenes and thienopyrimidine derivatives by aza-Wittig r
[期刊论文] 作者：Afaf M. Abdel Hameed,Afaf M. A,
来源：中国化学快报（英文版） 年份：2004
Azidation of aminothiophene derivative 1 afforded the corresponding azido derivative 2.The latter reacted with triphenylphosphine to afford iminophosphorane der...
Solar thermochemical reactions Ⅱ: Synthesis of 2-aminothiophenes via Gewald reaction induced by sola
[期刊论文] 作者：Ramadan Ahmed Mekheimer,Mohame,
来源：中国化学快报（英文版） 年份：2004
Green conditions have been developed for the synthesis of substituted 2-aminothiopbenes employing multicomponent reactions of a ketone with active methylene nit...
Solar thermochemical reactions Ⅲ: A convenient one-pot synthesis of 1,2,4,5-tetrasubstituted imidazo
[期刊论文] 作者：Mekheimer,Afaf M. A,
来源：中国化学快报（英文版） 年份：2004
A simple, convenient and efficient method for the synthesis of 1,2,4,5-tetrasubstituted imidazole derivatives using benzoin, an aromatic aldehyde, an aromatic a...
14CO2 Fixation and Translocation of Photoassimilates as Selection Criteria of Egyptian Taro Genotype
[期刊论文] 作者：Helal Ragab Moussa,Afaf Abd El,
来源：植物学报（英文版） 年份：2004
The growth characteristics, different physiological parameters, photosynthetic activity (14CO2 fixation), and the translocation rate of photoassimilates in diff...
[期刊论文] 作者：赵胜华, 张国忠, 张仕杰, 付建伟, 谢干, Mohame,
来源：华中农业大学学报 年份：2004
为实现水稻联合收割机脱粒滚筒实时喂入量监测,基于薄膜传感器设计了一种脱粒滚筒喂入量测量系统,其原理为通过薄膜传感器测出滚筒顶盖侧边因喂入量变化而产生的受力变化.以...
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