1367458-54-5Relevant academic research and scientific papers
Br?nsted acid-catalysed hydroarylation of unactivated alkynes in a fluoroalcohol-hydrocarbon biphasic system: Construction of phenanthrene frameworks
Takahashi, Ikko,Fujita, Takeshi,Shoji, Noriaki,Ichikawa, Junji
, p. 9267 - 9270 (2019)
Transition metal-free hydroarylation of unactivated alkynes was achieved by combining a Br?nsted acid catalyst and a two-phase solvent system consisting of 1,1,1,3,3,3-hexafluoropropan-2-ol (HFIP) and cyclohexane. This protocol is applicable to a wide variety of 2-alkynylbiaryls which leads to the synthesis of substituted phenanthrenes via 6-endo-selective ring closure. The biphasic system achieves highly efficient ring closure by appropriate separation of cationic intermediates from neutral compounds. The vinyl carbocation intermediates are stabilised in the HFIP phase, while the substrates and products are distributed in the cyclohexane phase to suppress intermolecular side reactions.
Cascade cyclization of aryldiynes using iodine: Synthesis of iodo-substituted benzo[b]naphtho[2,1-d]thiophene derivatives for dye-sensitized solar cells
Ferrara, Giovanni,Jin, Tienan,Akhtaruzzaman, Md.,Islam, Ashraful,Han, Liyuan,Jiang, Hua,Yamamoto, Yoshinori
scheme or table, p. 1946 - 1950 (2012/05/05)
A facile, efficient, and general synthetic method for iodo-substituted benzo[b]naphtho[2,1-d]thiophenes has been developed via a cascade cyclization of thioanisole-substituted aryldiynes using iodine. A new donor-π linker-acceptor (D-π-A) organic dye, G1,
