enol ethers in the presence of Dess-Martin periodinane (DMP) and pyridine under mild reaction conditions to afford a new class of dihydropyran derivatives in good yields with high diastereoselectivity. This is the first report on the preparation of cis-fused dihydropyrans from Baylis-Hillman adducts and silyl enol ethers.
Baylis-Hillman 加合物在温和的反应条件下在 Dess-Martin periodinane (
DMP) 和
吡啶的存在下进行平滑的
氧化 Mukaiyama-Michael 加成和随后与甲
硅烷基
烯醇醚环化,以良好的收率和高非对映选择性提供一类新的二
氢吡喃衍
生物. 这是关于从 Baylis-Hillman 加合物和甲
硅烷基
烯醇醚制备顺式稠合二
氢吡喃的第一份报告。