129196-84-5Relevant academic research and scientific papers
REGIO- AND STEREO-CHEMISTRY OF THE COUPLING REACTION OF PHENYLSULPHENYL-, PHENYLSULPHINYL- AND PHENYLSULPHONYL-PENTADIENYL METALS
Epifani, E.,Florio, S.,Ingrosso, G.,Ronzini, L.,Sgarra, R.,Troisi, L.
, p. 7489 - 7500 (2007/10/02)
The coupling reaction of phenylsulphenyl-, phenylsulphinyl and phenylsulphonyl-pentadienyl metals 3a-g has been studied showing that while 3c-g couple in any case regioselectively and stereoselectively, the coupling of 3a-b is countercation and electrophile dependent.The α-regioisomeric coupling products of phenylsulphenylpentadienyl metals may undergo sigmatropic rearrangement, those of phenylsulphinyl- and phenylsulphonyl-pentadienyl metals give fast double sigmatropic isomerization.
Regiochemistry and stereochemistry of the coupling of phenylthiopentadienyl metals with C-electrophiles
Florio,Ronzini,Sgarra
, p. 2327 - 2330 (2007/10/02)
Phenylthiopentadienyl anions 2 couple with MeI and cyclopentanone either regioselectively and stereoselectively to give 3a and 4a respectively. With aldehydes the regiochemistry and stereochemistry is affected by the counterion of 2, furnishing α-, γ- or
