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Updated: Jun 1, 2026

Preparation of Stable Bicyclic Aziridinium Ions and Their Ring-Opening for the Synthesis of Azaheterocycles
Published on: August 22, 2018
(5E)-5-(4-Hydr-oxy-3-methoxy-benzyl-idene)-2-thioxo-1,3-thia-zolidin-4-one methanol monosolvate
Abstract:
In the title compound, C(11)H(9)NO(3)S(2)·CH(4)O, the dihedral angle between the aromatic rings is 3.57 (16)° and intra-molecular O-H⋯O and C-H⋯S inter-actions occur. In the crystal, the thia-zolidin-4-one mol-ecules are linked by N-H⋯O hydrogen bonds, forming chains. The hydrogen-bond motifs lead to S(5), S(6) and R(3) (3)(8) ring motifs. There exist C=O⋯π inter-actions between the heterocyclic rings and π-π inter-actions between the heterocyclic and benzene rings at distances of 3.455 (2) and 3.602 (2) Å, respectively. The methanol solvent mol-ecule is disordered over two sets of sites in a 0.542 (9):0.458 (9) ratio.
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