α-Allenic ethers 2 are prepared by the reaction of 1,4-dialkoxy-2-butynes 1 with lithium aluminium hydride and magnesium bromide. Tertiary α-allenic amines 4 are obtained by treating 4-dialkylamine-1-methoxy-2-butynes 3 with lithium aluminium hydride and aluminium chloride.
通过 1,4-二烷氧基-
2-丁炔 1 与氢化
锂铝和
溴化镁反应制备 δ 烯醚 2。4- 二烷基胺-1-甲氧基-
2-丁炔 3 与氢化
锂铝和
氯化铝反应可得到叔δ- 烯胺 4。