Synthesis of α-phenylseleno-α,β-unsaturated esters by Wittig-type reactions. Studies on the Diels–Alder reaction
作者:Claudio C. Silveira、Marta R.S. Nunes、Elson Wendling、Antonio L. Braga
DOI:10.1016/s0022-328x(00)00685-9
日期:2001.3
anion and ethoxycarbonyl(phenylselenenyl)methylidene(triphenyl)phosphorane with aliphatic and aromaticaldehydes. The α-phenylseleno unsaturated esters were obtained as mixtures of E/Z-isomers in medium to good yields and in moderate yields, respectively. α-Phenylselenenyl acrylate was used as dienophile in a Diels–Alder reaction. On reaction with isoprene only the para isomer was obtained while reaction