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In fact, reacting amine 5a with three equivalents of 4 at 80°C for 48 h allowed the isolation of helicene 7a in 13% yield
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In fact, reacting amine 5a with three equivalents of 4 at 80°C for 48 h allowed the isolation of helicene 7a in 13% yield.
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53849115786
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Torsional angles were calculated by using the corresponding cif files in the Mercury 1.4.2 program to generate the planes, where α and β phenyl rings lay. For [6]helicene 12. the angle was calculated by using the external ring of the naphthalene moiety.
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D values of (-)-405 and (+)-405 (c=0.06. hexane), respectively.
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D values of (-)-405 and (+)-405 (c=0.06. hexane), respectively.
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The racemization rate is twice the M = P enantiomerization rate.
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Pollicino, S.3
Ricci, A.4
Devlin, F.J.5
Stephens, P.J.6
Gasparrini, F.7
Rompietti, R.8
Villani, C.9
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