Abstract
The reaction between αα-dimetallo-derivatives of benzyl phenyl sulphone and carbonyl compounds has been shown to give αβ-unsaturated phenyl sulphones (IV), in yields strongly dependent upon the nature of the metal. Good yields have been obtained from saturated aliphatic and aromatic aldehydes and ketones, including αβ-unsaturated carbonyl compounds. The stereochemistry of the reaction has been studied. In the case of benzaldehyde and p-chlorobenzaldehyde only the Z-isomer was isolated; in the other cases a ca. 1 : 1 mixture of Z- and E-isomers was obtained.
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