Direct arylation of arene and N -heteroarenes with diaryliodonium salts without the use of transition metal catalyst
A novel and simple transition metal-free direct arylation of arene and N-heteroarenes with diaryliodonium salts has been developed. This cross-coupling reaction is promoted only by base and gives the desired products in moderate to good yields.
Iron-mediated direct suzuki-miyaura reaction: A new method for the ortho -arylation of pyrrole and pyridine
(Figure presented) The first example of an iron-mediated direct Suzuki-Miyaura reaction between N-heterocyclic compounds and arylboronic acids is described, and both electron-rich and electron-deficient heteroarenes can be successfully used for the coupling reaction.
Two short and efficient synthetic approaches for -mostly unknown- 2-arylpyrroles are presented.The key intermediates 3 are conveniently obtained from commercially available acetophenones 5 (method I) or benzoic acid derivatives 10, 11 (method II).
Kruse, Chris G.,Bouw, Jan P.,Hes, Roelof van,Kuilen, Aalt van de,Hartog, Jack A. J. den
p. 3141 - 3151
(2007/10/02)
PYRROLES FROM KETOXIMES AND ACETYLENE. 28. INVESTIGATION OF VINYL CHLORIDE INSTEAD OF ACETYLENE FOR THE SYNTHESIS OF ARYLPYRROLES FROM ARYLETHANONE OXIMES
2-Arylpyrroles and their N-vinyl derivatives have been synthesized by reacting arylethanone oximes with vinyl chloride in a KOH-DMSO system at 140 deg C.
Aliev, I. A.,Almamedova, D. T.,Gasanov, B. R.,Mikhaleva, A. I.
p. 1117 - 1119
(2007/10/02)
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