Highly chemoselective coupling of allenylstannanes with organic iodides promoted by Pd(PPh3)4/LiCl: an efficient method for the synthesis of substituted allenes |
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| Authors: | Chih-Wei HuangMuthian Shanmugasundaram Hao-Ming ChangChien-Hong Cheng |
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| Institution: | Department of Chemistry, Tsing Hua University, Hsinchu 300, Taiwan, ROC |
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| 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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| Keywords: | palladium and compounds coupling reactions lithium and compounds allenes |
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