Chiral Discrimination in Photochromic Helicenes

A photoresponsive dithienylethene derivative bearing chiral pinene-based arms underwent a stereoselective photoinduced cyclization reaction to produce greater than 98% of a single diastereomer. The magnitude of the optical rotation changed as much as Δ[α]373 = 8698° upon alternate irradiation with 4...

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Veröffentlicht in:	Journal of the American Chemical Society 2005-05, Vol.127 (20), p.7272-7273
Hauptverfasser:	Wigglesworth, Tony J, Sud, David, Norsten, Tyler B, Lekhi, Vikram S, Branda, Neil R
Format:	Artikel
Sprache:	eng
Schlagworte:	Atomic and molecular physics Exact sciences and technology Molecular properties and interactions with photons Optical activity and dichroism magnetooptical and electrooptical spectra Optical activity, optical rotation circular dichroism Physics
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Zusammenfassung:	A photoresponsive dithienylethene derivative bearing chiral pinene-based arms underwent a stereoselective photoinduced cyclization reaction to produce greater than 98% of a single diastereomer. The magnitude of the optical rotation changed as much as Δ[α]373 = 8698° upon alternate irradiation with 400 nm and greater than 434 nm light.
ISSN:	0002-7863 1520-5126
DOI:	10.1021/ja050190j