2-(1,3-Dithian-2-yl-idene)-1-phenyl-butane-1,3-dione.

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作者:Zhang Lan-Cui, Li Na, Li Xiao-Hui, Huang Cui-Ying, Zhou Guang-Hua
The title compound, C(13)H(12)O(2)S(2), belonging to the group of dioxoketene cyclic S,S-acetals, was prepared from the corresponding dione in high yield. In the structure, the C=O and C=C bonds are not coplanar, with O=C-C=C torsion angles of -36.8†(4) and -21.0†(4)°. The dithian ring has a twisted conformation.

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