CHIRAL CRYSTALLIZATION OF CIS-2,3-DICHLORO-BUTH-2-ENE-1,4-DIOL
O. A. Lodochnikova, L. Z. Latypova, R. M. Khakimov, A. R. Kurbangalieva, D. B. Krivolapov, I. A. Litvinov
Keywords: cis-2,3-dichlorobuth-2-ene-1,4-diol, chiral crystallization, hydrogen bonds, supramolecular structure, X‑ray diffraction study
Abstract
The X‑ray diffraction study of cis-2,3-dichlorobuth-2-ene-1,4-diol (3) obtained by the reduction of 3,4-dichloro-5-ethoxy- and 5-isopropoxi-2(5H)-furanones with lithium aluminum hydride is performed. The crystals of compound 3 are trigonal: a = b = 15.746(9) Å, c = 6.848(4) Å; V = 1470.5(15) Å3, space group P31, Z = 9 (three independent molecules). Independent molecules have identical planar conformation, and hydroxyl groups are located on different sides of the multiple bond plane. The supramolecular motif of the crystal is spirals about the threefold screw axes; the neighboring spirals are linked by OH…O hydrogen bonds.
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