anion and ethoxycarbonyl(phenylselenenyl)methylidene(triphenyl)phosphorane with aliphatic and aromatic aldehydes. 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
通过使
三乙基膦酰基
乙酸根阴离子与乙氧基羰基(苯基
硒烯基)亚甲基(三苯基)膦烷与脂肪族和
芳香族醛反应,制得乙基α-苯基
硒基-α,β-不饱和酯。以E / Z异构体的混合物形式分别以中等到良好的收率和中等的收率获得了α-苯基
硒代不饱和酯。在Diels-Alder反应中,α-苯基
硒烯
丙烯酸酯被用作亲二烯体。在与
异戊二烯反应时,仅获得对位异构体,而与
环戊二烯反应以高收率得到外型/内型异构体的1:1混合物。