Tetrahedron: Asymmetry

pH-Sensitive exciton chirality chromophore. Solvatochromic effects on circular dichroism spectra

SE Boiadjiev, DA Lightner

Index: Boiadjiev, Stefan E.; Lightner, David A. Tetrahedron Asymmetry, 1996 , vol. 7, # 10 p. 2825 - 2832

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Citation Number: 10

Abstract

Diesters (1 and 3) of (1S, 2S) and (1R, 2R)-cyclohexanediol and diamides (2 and 4) of (1S, 2S) and (1R, 2R)-diaminocyclohexane with p-hydroxycinnamic acid exhibit intense bisignate circular dichroism spectra in CH3OH: 1Δε+ 55 (323 nm),− 34 (287 nm); 2Δε+ 75 (318 nm),− 55 (281 nm) and in (CH3) 2SO: 1Δε+ 53 (328 nm),− 33 (292 nm); 2Δε+ 65 (319 nm),− 50 (280 nm). Added NaOH causes a bathochromic shift of∼ 50 nm in CH3OH and ...