Organic letters

Toward a visible light mediated photocyclization: Cu-based sensitizers for the synthesis of [5] helicene

AC Hernandez-Perez, A Vlassova, SK Collins

Index: Hernandez-Perez, Augusto C.; Vlassova, Anna; Collins, Shawn K. Organic Letters, 2012 , vol. 14, # 12 p. 2988 - 2991

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Citation Number: 49

Abstract

A photochemical synthesis of [5] helicene employing a copper-based sensitizer 7 has been developed that avoids the disadvantages associated with the traditional UV light mediated method. The visible light mediated synthesis uses common glassware and a simple household light bulb without the competing formation of [2+ 2] cycloadducts, regioisomers, or the overoxidation product benzo [ghi] perylene 3. Preliminary results show that the ...

~73%

Synthesis of [5]-,[6]-, and [7] helicene via Ni (0)-or Co (I...

[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]

Transition metal catalysed synthesis of tetrahydro derivativ...

[Stara, Irena G.; Stary, Ivo; Kollarovic, Adrian; Teply, Filip; Vyskocil, Stepan; Saman, David Tetrahedron Letters, 1999 , vol. 40, # 10 p. 1993 - 1996]

Syntheses of [5]-helicene by McMurry or carbenoid couplings

[Dubois, Fabien; Gingras, Marc Tetrahedron Letters, 1998 , vol. 39, # 28 p. 5039 - 5040]

Synthesis of Phenanthrenes and Polycyclic Heteroarenes by Tr...

[Mamane, Victor; Hannen, Peter; Fuerstner, Alois Chemistry - A European Journal, 2004 , vol. 10, # 18 p. 4556 - 4575]

Syntheses of [5]-helicene by McMurry or carbenoid couplings

[Dubois, Fabien; Gingras, Marc Tetrahedron Letters, 1998 , vol. 39, # 28 p. 5039 - 5040]