最近分离出的 4-benzyl-3-phenylfuran-2,5-dione 和抗真菌的鼠尾草内酯 A 已使用苯基溴化镁与 2-(溴甲基)富马酸二甲酯的化学选择性 SN 2' 偶联、溴化物在 3-(溴甲基)-4-苯基呋喃-2,5-二酮与苯基溴化镁和区域选择性N-Selectride诱导的3-苄基-4-苯基呋喃-2,5-二酮的还原反应为关键反应。
(Z)-Dimethyl α-(bromomethyl)fumarate, an efficient intermediate for the selective synthesis of dimethyl 3-alkyl itaconates and 2-alkyl 3-carbomethoxy-γ-lactams
摘要:
(Z)-Dimethyl alpha-(bromomethyl)fumarate 2 proved to be an efficient precursor of 3-substituted itaconic acid esters 3 via its reaction with magnesium dialkylcuprates. Some hindered esters 3 can be used for the diastereoselective synthesis of alpha-alkylated-beta-methoxycarbonyl-gamma-lactams 6. (C) 1999 Elsevier Science Ltd. All rights reserved.