Solvent-triggered breakdown of solid solution behaviour enables direct enantioselective crystallization of RS-phenprocoumon
Abstract
We show that solvent selection plays a decisive role in chiral resolution of RS-phenprocoumon-quinidine. In particular, formation of a bis-acetone solvate suppresses solid solution formation, and affords spontaneous enantioselective crystallization of S-phenprocoumon with enantiomeric excesses of up to 92% in a single resolution step.

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