readily underwent formylation with replacement of the silyl group when treated with dichloromethyl methyl ether and titanium(IV) chloride. This reaction provides a simple procedure for the selective preparation of (E)-2-alkenals (2) and was conveniently applied to the synthesis of ethyl 12-oxo-10(E)-dodecenoate and nuciferal.
                                    当用二
氯甲基甲基醚和
氯化
钛 (IV) 处理时,1,2-二取代
乙烯基三甲基
硅烷 (1) 很容易发生甲酰化,甲
硅烷基被取代。该反应为选择性制备 (E)-2-链烯醛 (2) 提供了一个简单的方法,并方便地应用于 12-oxo-10(E)-
十二烯酸
乙酯和核素的合成。