Conversion of 2-Methylthio-4-trifluroacetyl-5,6-dihydro-4H-1,3,4-thiadiazines into α,β-Unsaturated Esters via Carbanion-Induced Ring Opening and Desulfurization
A Homologation of Aldehydes and Ketonesviathe Formation and the Subsequent Pummerer-type Ring Fission of 2-Methylsulfinyl-5,6-dihydro-4H-1,3,4-thiadiazine Derivatives