Polyfunctional and stereochemically pure (E) or (Z) alkenylcopper reagents have been generated by carbocupration of terminal alkynes or by an iodine–lithium exchange reaction and have been found to add to various diethyl alkylidenemalonates, affording γ,δ-unsaturated esters in excellent yields.
多功能且立体
化学纯的 (E) 或 (Z) 烯基
铜试剂通过端炔的碳
铜化反应或
碘-
锂交换反应生成,并被发现能够与多种
二乙基烯基美克酸酯发生加成反应,获得 γ,δ-不饱和酯,产率极高。