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To investigate the thermodynamic and molecular self‐assembly mechanism of trans‐1,2‐cyclohexane dicarboxylic acid containing two carboxylic acid groups in the chiral resolution process, (S)‐phenylethylamine was used as the chiral resolving agent. Two stoichiometric salts were formed when the raw materials were fed at different molar ratios: cyclohexane dicarboxylate monophenylethylamine salt and cyclohexane...
The crystal structures of diastereomeric salts of chloromandelic acid and phenylethylamine were determined and are presented herein. The structure comparison between less soluble salts and more soluble salts shows that weak interactions such as CH/π interactions and van der Waals gain importance and contribute to chiral recognition when the hydrogen bonding patterns are very similar. Chirality, 2010...
The optical resolution of p‐chloromandelic acid using (R)‐α‐phenylethylamine as resolving agent was presented. The effect of solvents, molar ratio of racemate to the resolving agent, filtration temperature as well as the amount of solvent on resolution was investigated by orthogonal experimentation. The binary melting point phase diagram and crystal structure analysis of diastereomeric salts rationalized...
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