intermediates. N-Iodosuccinimide (NIS) effectively worked as an activator of the double bonds in the substrates and the silyl enol ether. Application to an expedient synthesis of the adjacent bis-tetrahydrofuran core of Annonaceous acetogenins with a cis/threo/cis relative stereochemistry is also described.
                                    在甲
硅烷基烯醇醚的存在下,γ,δ-不饱和醇的
碘环化通过甲
硅烷氧基中间体在一个罐中产生了顺式-2,5-二取代的
四氢呋喃。N-
碘代琥珀
酰亚胺(NIS)有效地用作底物和甲
硅烷基烯醇醚中双键的活化剂。还描述了用于具有顺/苏/顺/顺相对立体
化学的壬基产
乙酸原的相邻双-
四氢呋喃核的合成的应用。