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ChemInform Abstract: Site-Selective Sonogashira Reactions of 1,4-Dibromo-2-fluorobenzene — Synthesis and Properties of Fluorinated Alkynylbenzenes.

✍ Scribed by Sebastian Reimann; Muhammad Sharif; Martin Hein; Alexander Villinger; Kai Wittler; Ralf Ludwig; Peter Langer

Book ID
112045352
Publisher
John Wiley and Sons
Year
2012
Weight
35 KB
Volume
43
Category
Article
ISSN
0931-7597

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## Abstract A variety of alkynyl‐substituted fluorinated benzene derivatives have been prepared by Sonogashira cross‐coupling reactions of 1,4‐dibromo‐2‐fluorobenzene. The reactions proceed with very good site‐selectivity in favor of the 4‐position because of electronic and steric reasons. The regi

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## a b s t r a c t The Suzuki-Miyaura reaction of 1,4-dibromo-2-fluorobenzene with two equivalents of arylboronic acids gave fluorinated para-terphenyls. The reaction with 1 equiv of arylboronic acid resulted in site-selective formation of biphenyls. The one-pot reaction of 1,4-dibromo-2-fluorobenz