title: CuI-catalyzed suzuki-miyaura and sonogashira cross-coupling reactions using DABCO as ligand.
abstract: In the presence of TBAB, CuI-catalyzed Suzuki-Miyaura cross-coupling of vinyl halides and aryl halides with arylboronic acids was conducted smoothly to afford the corresponding diarylethenes and polyaryls in moderate to good yields using DABCO (1,4-diazabicyclo[2.2.2]octane) as the ligand. We also found that the inexpensive CuI/DABCO catalytic system was effective for Sonogashira cross-couplings of aryl halides and vinyl halides. A variety of aryl halides and vinyl halides including activated aryl chlorides underwent the coupling with terminal alkynes in moderate to excellent yields.
authors.affiliation: Key Laboratory of Chemical Biology & Traditional Chinese Medicine Research (Ministry of Education), College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, China. jhli@hunnu.edu.cn
authors.forename: Jin-Heng
authors.initials: JH
authors.lastname: Li
authors.forename: Ji-Lan
authors.initials: JL
authors.lastname: Li
authors.forename: De-Ping
authors.initials: DP
authors.lastname: Wang
authors.forename: Shao-Feng
authors.initials: SF
authors.lastname: Pi
authors.forename: Ye-Xiang
authors.initials: YX
authors.lastname: Xie
authors.forename: Man-Bo
authors.initials: MB
authors.lastname: Zhang
authors.forename: Xi-Chao
authors.initials: XC
authors.lastname: Hu
mesh_terms: D000480:Alkynes / Q000737:chemistry; D002384:Catalysis; D003300:Copper / Q000737:chemistry; D003432:Cross-Linking Reagents / Q000737:chemistry; D006219:Halogens / Q000737:chemistry; D006841:Hydrocarbons, Aromatic / Q000737:chemistry; D008024:Ligands; D010879:Piperazines / Q000737:chemistry*
chemical_list: D000480:Alkynes; D003432:Cross-Linking Reagents; D006219:Halogens; D006841:Hydrocarbons, Aromatic; D008024:Ligands; D010879:Piperazines; D003300:Copper; C030973:cupric oxide; C007306:triethylenediamine