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• W1979233668 abstract "Atropisomeric (R,R)-2,2‘-bi([2]paracyclo[2](5,8)quinolinophane) [(R,R)-1] and (R,R)-1,1‘-bi([2]paracyclo[2](5,8)isoquinolinophane) [(R,R)-2] have been prepared in moderate overall yield (17 and 9%, respectively) by a four-step sequence starting from (R)-(−)-4-amino[2.2]paracyclophane and (R)-(−)-4-carboxy[2.2]paracyclophane, respectively. The structures have been determined on the basis of NOE 1H NMR analysis and molecular mechanics (MM) calculations performed with a Spartan02 program, using the MMF94s force field. A preliminary, qualitative analysis of the chiroptical properties of these two compounds has also been attempted. The main spectral data can be interpreted in terms of an almost planar 2,2‘-bisquinoline chromophore inserted in a paracyclophane structure in the case of (R,R)-1, while in the case of (R,R)-2, the main role is played by a distorted 1,1‘-bisisoquinoline chromophore. On the basis of the above structural results, a hypothesis about the enantioselection capability of these two molecules has also been formulated." @default.
• W1979233668 created "2016-06-24" @default.
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• W1979233668 date "2005-01-11" @default.
• W1979233668 modified "2023-10-16" @default.
• W1979233668 title "Atropisomeric (<i>R,R</i>)-2,2‘-Bi([2]paracyclo[2](5,8)quinolinophane) and (<i>R,R</i>)-1,1‘-Bi([2]paracyclo[2](5,8)isoquinolinophane): Synthesis, Structural Analysis, and Chiroptical Properties" @default.
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• W1979233668 doi "https://doi.org/10.1021/jo048147m" @default.
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