@article{e2c7ebc887984a8c90830e4b7a5aecbd,
title = "Synthesis of macrocyclic heteroarylenes by consecutive inter- and intramolecular cycloadditions of thiophenylene-tethered triynes",
abstract = "Consecutive inter- and intramolecular [2+2+2] cycloadditions of various thiophenylene-tethered triynes were comprehensively studied by using chiral Rh catalysts. When we started from 2,3- and 3,4-thiophenylene-tethered substrates, dimerization proceeded and chiral tetraheteroarylenes were obtained. In contrast, reactions of 2,5-thiophenylene-tethered substrates gave hexaheteroarylenes as trimers. When bis- and tris(2,5-thiophenylene)-tethered triynes were used, mixtures of dimers and trimers were obtained, which included macrocyclic systems that contained up to 12 aromatic rings, and their photophysical properties were measured.",
keywords = "Asymmetric synthesis, Chirality, Cycloaddition, Heteroarylenes, Macrocycles, Rhodium, Thiophene",
author = "Takanori Shibata and Masako Fujimoto and Takashi Otani",
note = "Funding Information: This work was supported by ACT-C from Japan Science and Technology Agency (Japan) and the Global COE program {\textquoteleft}Center for Practice Chemical Wisdom{\textquoteright} by Ministry of Education, Culture, Sports, Science, and Technology at Waseda University. We thank Ms. Miku Fukai and Mr. Shoma Kita (Waseda University) for their experimental assistance. We also thank Takasago International Corp. (Cy-BINAP and Cy-SEGPHOS) and Nippon Chemical Industrial Corp. (QuinoxP ∗ ) for the gift of chiral ligands. We are grateful to Umicore for generous supports in [RhCl(cod)] 2 supply and to Hamamatsu Photonics for the measurements of absolute quantum yield using Quantaurus-QY. Publisher Copyright: {\textcopyright} 2014 Elsevier Ltd.",
year = "2014",
month = nov,
day = "11",
doi = "10.1016/j.tet.2014.09.077",
language = "English",
volume = "70",
pages = "8453--8461",
journal = "Tetrahedron",
issn = "0040-4020",
publisher = "Elsevier Limited",
number = "45",
}