(E)-Dimethyl 2-Oxopent-3-enylphosphonate: An Excellent Substrate for Cross-Metathesis - Easy Access to Functionalized Heterocycles
作者:Thomas Cochet、Didier Roche、Véronique Bellosta、Janine Cossy
DOI:10.1002/ejoc.201101398
日期:2012.2
Simple and efficient access to tetrahydrofurans, tetrahydropyrans, and pyrrolidines through a tandem cross-metathesis/1,4-addition process from (E)-dimethyl 2-oxopent-3-enylphosphonate and N-protected ω-unsaturated amines or alcohols under microwave irradiation is described. As the Grubbs–Hoveyda catalyst is highly chemoselective, a diversity of functionalized heterocycles were synthesized. Furthermore
在微波辐射下,通过 (E)-2-氧代戊-3-烯基膦酸二甲酯和 N-保护的 ω-不饱和胺或醇通过串联交叉复分解/1,4-加成过程简单有效地获得四氢呋喃、四氢吡喃和吡咯烷被描述。由于 Grubbs-Hoveyda 催化剂具有高度化学选择性,因此合成了多种功能化杂环。此外,由于存在在杂环的 C2 位置具有酮膦酸酯的侧链,因此可以进行额外的官能化。