Synthesis of [5]-,[6]-, and [7] helicene via Ni (0)-or Co (I)-catalyzed isomerization of aromatic cis, cis-dienetriynes

…, D Šaman, L Rulíšek, P Fiedler

Index: Teply, Filip; Stara, Irena G.; Stary, Ivo; Kollarovic, Adrian; Saman, David; Rulisek, Lubomir; Fiedler, Pavel Journal of the American Chemical Society, 2002 , vol. 124, # 31 p. 9175 - 9180

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Citation Number: 110

Abstract

An original approach to helicene frameworks exploiting atom economic isomerization of appropriate energy-rich aromatic cis, cis-dienetriynes has been developed. The new paradigm provides nonphotochemical syntheses of helicenes based on the easy, convergent, and modular assembly of key cis, cis-dienetriynes and their nickel (0)-catalyzed [2+ 2+ 2] cycloisomerization. The potential of the methodology is underlined by the ...