An enantiopure benzo[e]isoindolinone is available by a sequence involving the reaction of a phenyl substituted tetramic acid with two equivalents of a stabilised phosphorane Ph3P=CHCO2R (R = Et or t-Bu).
苯并[e]
异吲哚啉酮的对映体纯度是通过苯基取代的四元酸与两当量的稳定膦烷 Ph3P=CHCO2R (R = Et 或 t-Bu)反应得到的。