Copper??Catalyzed Domino Homologation and Cycloisomerization Reactions for 3??Pyrroline Synthesis
…, M Maheswara, JY Hwang, EJ Kang
Index: Shin, Ye Ho; Maheswara, Muchchintala; Hwang, Joon Young; Kang, Eun Joo European Journal of Organic Chemistry, 2014 , vol. 2014, # 11 p. 2305 - 2311
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Abstract
Abstract Copper bromide was found to be an efficient catalyst for a domino reaction sequence leading to 3-pyrrolines. The Cu (I)-catalyzed Crabbé reaction of propargyl sulfonamide and selective cycloisomerization of the allene intermediate were carried out using microwave irradiation conditions affording a wide range of 2-substituted-and 2, 5- disubstituted-3-pyrrolines. Mechanistic studies of the reaction intermediates revealed two ...
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