@article{e13ab766192946d2bc72696e9a31343c,
title = "Synthesis of 2,9-dialkylated phenanthro[1,2-b:8,7-b′]dithiophenes via cross-coupling reactions and sequential Lewis acid-catalyzed regioselective cycloaromatization of epoxide",
abstract = "Phenanthro[1,2-b:8,7-b′]dithiophene (PDT) was prepared via Suzuki-Miyaura or Negishi cross-coupling of a 2-thienylboron or -zinc compound with 1,4-dibromobenzene, followed by Lewis acid-catalyzed regioselective cycloaromatization of the epoxide. A series of 2,9-dialkylated phenanthro[1,2-b:8,7-b′]dithiophene (PDT) derivatives could also be synthesized in good yields by Suzuki-Miyaura coupling of the brominated PDT with alkylboranes by introducing linear alkyl substituents.",
keywords = "Boron, Negishi coupling, Phenacenes, Suzuki-Miyaura coupling, Zinc",
author = "Keita Hyodo and Hikaru Nonobe and Shuhei Nishinaga and Yasushi Nishihara",
note = "Funding Information: This study was partly supported by the Program for Promoting the Enhancement of Research Universities from MEXT , Japan and a Special Project of Okayama University. We gratefully thank Dr. Masayuki Iwasaki (Okayama University) for HRMS measurements and Ms. Megumi Kosaka and Mr. Motonari Kobayashi at the Department of Instrumental Analysis, Advanced Science Research Center, Okayama University, for the measurements of elemental analyses and the SC-NMR Laboratory of Okayama University for the NMR spectral measurements. ",
year = "2014",
month = jul,
day = "16",
doi = "10.1016/j.tetlet.2014.05.035",
language = "English",
volume = "55",
pages = "4002--4005",
journal = "Tetrahedron Letters",
issn = "0040-4039",
publisher = "Elsevier Limited",
number = "29",
}