"tetraphenylenes; hexahelicene; helquats; attrition-enhanced deracemization"@en . . . . "11310" . "10.1021/jo301615k" . . . "RIV/00216208:11310/13:10141579" . . "8"^^ . "Journal of Organic Chemistry" . . . "Search for Conglomerate in Set of [7]Helquat Salts: Multigram Resolution of Helicene-Viologen Hybrid by Preferential Crystallization" . . "000315254100002" . . . "Tepl\u00FD, Filip" . "Ka\u0161icka, V\u00E1clav" . "78" . . "Klepet\u00E1\u0159ov\u00E1, Blanka" . . "Investigation of a set of 12 [7]helquat salts by X-ray crystal diffraction led to identification of conglomerate behavior in bis(trifluoroacetate) salt [2][CF3CO2](2). This is to demonstrate that a systematic search for conglomerates can be performed for a given helicenoid enabling straightforward multigram resolution via preferential crystallization. Subsequently, preferential crystallization of this chiral helicene viologen hybrid has been established to obtain pure P and M enantiomers on a multigram scale, 5 g each. Furthermore, preparation of nonracemic samples of [7]helquat 2 via diastereomeric (R,R)-dibenzoyltartrate salts is described, and determination of absolute configuration and racemization barrier is also reported." . "4" . "\u0160aman, David" . "Search for Conglomerate in Set of [7]Helquat Salts: Multigram Resolution of Helicene-Viologen Hybrid by Preferential Crystallization"@en . . . "Search for Conglomerate in Set of [7]Helquat Salts: Multigram Resolution of Helicene-Viologen Hybrid by Preferential Crystallization" . "V\u00E1vra, Jan" . "14"^^ . . "104210" . . "Investigation of a set of 12 [7]helquat salts by X-ray crystal diffraction led to identification of conglomerate behavior in bis(trifluoroacetate) salt [2][CF3CO2](2). This is to demonstrate that a systematic search for conglomerates can be performed for a given helicenoid enabling straightforward multigram resolution via preferential crystallization. Subsequently, preferential crystallization of this chiral helicene viologen hybrid has been established to obtain pure P and M enantiomers on a multigram scale, 5 g each. Furthermore, preparation of nonracemic samples of [7]helquat 2 via diastereomeric (R,R)-dibenzoyltartrate salts is described, and determination of absolute configuration and racemization barrier is also reported."@en . "Search for Conglomerate in Set of [7]Helquat Salts: Multigram Resolution of Helicene-Viologen Hybrid by Preferential Crystallization"@en . . . . "0022-3263" . "http://dx.doi.org/10.1021/jo301615k" . "Koval, Du\u0161an" . . "RIV/00216208:11310/13:10141579!RIV14-MSM-11310___" . "Severa, Luk\u00E1\u0161" . "[C30F9739A974]" . . "I, P(GA203/09/0705), P(GAP206/12/0453), P(GAP207/10/2391), P(GP203/09/P485), Z(MSM0021620857)" . "CH - \u0160v\u00FDcarsk\u00E1 konfederace" . . "1"^^ . "C\u00EDsa\u0159ov\u00E1, Ivana" .