O-triflate of 2-cyano-3-oxopyrrolidine was obtained and used in a palladium coupling reaction. The resulting Δ2-pyrrolidine derivatives allowed diastereocontrol at C2 and C3 after catalytic hydrogenation and led to chiral 3-substituted prolines as conformationally constrained amino acids.
获得了2-
氰基-3-氧
吡咯烷的O-
三氟甲磺酸酯,并将其用于
钯偶联反应中。将所得的Δ 2 -
吡咯烷衍
生物使其在C2和C3 diastereocontrol催化氢化后,并导致手性3-取代的脯
氨酸作为构象受限的
氨基酸。