作者:Jose M. Antelo Miguez、Luis Angel Adrio、Antonio Sousa-Pedrares、Jose M. Vila、King Kuok (Mimi) Hii
DOI:10.1021/jo701308b
日期:2007.9.1
[GRAPHICS]A synthetic procedure was developed that enables sequential chemoselective Suzuki-Miyaura cross-coupling of chlorobromobenzene with arylboronic acids. The first coupling is achieved at room temperature using a ligandless palladium catalyst. The chlorobiaryl product can then be subjected directly to the second coupling, facilitated by the SPhos ligand. Using this methodology, parallel synthesis of 32 unsymmetrical o-, m-, and p-terphenyl compounds was accomplished in good to excellent overall yields.