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Direct oxidation of unactivated aliphatic C-H bonds in a chemo-,regio-,and stereoselective manner represents an appealin......

　　An organocatalytic asymmetric aldol reaction of 5-alkyl-4-nitroisoxazoles to paraformaldehyde has been developed by ......

Organocatalysis, defined as the use of small organic molecules for catalyzing chemical transformations, can be traced ba......

为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7......

首次研究了二氟烯醇硅醚1与β,γ-不饱和酮酸酯2的反应.发现不论使用叔胺或叔胺-氢键给体双功能催化剂,均专一地发生Mukaiyama-ald......