专利号:US-8895780-B2 优先权日:2012-09-04 标题:Process for preparing N-H or N-alkyl 2-propynamide 发明人:DENG DA; ZHENG JUNCHENG 权利人:DENG DA; ZHENG JUNCHENG; BOEHRINGER INGELHEIM INT 摘要:Disclosed is a method for the synthesis of N—H or N-alkyl 2-propynamides useful as intermediate in the manufacture of pharmaceutically active ingredients.
参考标题:Double 1,4-Addition Of (Thio)Salicylamides/thiosalicylic Acids With Propiolate Derivatives: A Direct, General Synthesis Of Diverse Heterocyclic Scaffolds 作者:Hui-Hong Wang,Tao Shi,Wei-Wei Gao,Hong-Hua Zhang,Yong-Qiang Wang,Jun-Fang Li,Yong-Sheng Hou,Jin-Hong Chen,Xue Peng,Zhen Wang 摘要:Ring-Closure Procedure To Prepare A Range Of Diverse Heterocycles Has Been Developed. In This Transformation, A Variety Of Substituted (Thio)Salicylamides And Thiosalicylic Acids Occured Double 1, 4-Additions Reaction With Propiolate Derivatives In The Presence Of Inorganic Base (K3Po4), As A Result, Benzothiazinones, Benzoxazinones And Benzoxathiinones Were Prepared In Good To Excellent Yields Respectively
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摘要:Kruiswijk, E.; Deck, J. A., Science of Synthesis, (2009) 40, 827.