Highly chemoselective coupling of allenylstannanes with organic iodides promoted by Pd (PPh 3) 4/LiCl: an efficient method for the synthesis of substituted allenes
CW Huang, M Shanmugasundaram, HM Chang…
Index: Huang, Chih-Wei; Shanmugasundaram, Muthian; Chang, Hao-Ming; Cheng, Chien-Hong Tetrahedron, 2003 , vol. 59, # 20 p. 3635 - 3641
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Citation Number: 53
Abstract
An efficient method for the preparation of various monosubstituted arylallenes, disubstituted allenes and alkenylallenes via palladium-catalyzed coupling of allenylstannanes with aryl iodides or alkenyl iodides is described. The coupling reaction was carried out in the presence of Pd (PPh3) 4 and LiCl using DMF as solvent. The possible role of LiCl in this coupling process is discussed based on the 119Sn NMR studies.
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