Sonogashira cross-coupling of 2-chloro-3-iodopyridines with buta-1,3-diynes gave products of only iodine substitution; in the case of 2-bromo-3-iodopyridine either 2-bromo-3-(buta-1,3-diynyl)- or 2,3-bis(buta-1,3-diynyl)pyridines were obtained depending on the reaction conditions.
作者:Viktor N. Sorokoumov、Vladimir V. Popik、Irina A. Balova
DOI:10.1016/j.mencom.2011.01.008
日期:2011.1
Sonogashira cross-coupling of 2-chloro-3-iodopyridines with buta-1,3-diynes gave products of only iodine substitution; in the case of 2-bromo-3-iodopyridine either 2-bromo-3-(buta-1,3-diynyl)- or 2,3-bis(buta-1,3-diynyl)pyridines were obtained depending on the reaction conditions.