One-pot ring formation using (R)-1 or (S)-1 as a nucleophile and homochiral glycidyl triflate (R)-2 or (S)-2 as an electrophile a pivotal intermediate 4 which can be transformed into a 2,5-disubstituted pyrrolidine with any desired stereochemistry at the C-2 and C-5 positions.
一锅环的形成使用(R) - 1或(S) - 1作为亲核和纯手性
缩水甘油基
三氟甲磺酸酯(R) - 2或(S) - 2作为亲电子试剂的枢转中间体4可转化成2, 5-二取代的
吡咯烷在C-2和C-5位置具有任何所需的立体
化学。