Stereoselective Synthesis of (Z)-Enethiols and Their Derivatives: Vinylic SN2 Reaction of (E)-Alkenyl(phenyl)-λ3-iodanes with Thioamides
摘要:
[GRAPHICS]Exposure of (E)-beta -alkylvinyl(phenyl)-lambda (3)-iodanes to thioamides in dichloromethane at room temperature was found to result in a bimolecular nucleophilic substitution (S(N)2) at the vinylic carbon atom to give inverted (Z)-enethiols and/or (Z)-S-vinylthioimidonium salts. Vinylic SN2 reactions with thioureas are also discussed.
Stereoselective Synthesis of (<i>Z</i>)-Enethiols and Their Derivatives: Vinylic S<sub>N</sub>2 Reaction of (<i>E</i>)-Alkenyl(phenyl)-λ<sup>3</sup>-iodanes with Thioamides
[GRAPHICS]Exposure of (E)-beta -alkylvinyl(phenyl)-lambda (3)-iodanes to thioamides in dichloromethane at room temperature was found to result in a bimolecular nucleophilic substitution (S(N)2) at the vinylic carbon atom to give inverted (Z)-enethiols and/or (Z)-S-vinylthioimidonium salts. Vinylic SN2 reactions with thioureas are also discussed.