An efficient and stereoselective synthesis of 3-alkyl-3-hydroxymethyl-5-vinyltetrahydrofurans is described by the Pd0-catalyzed cyclization of the methyl carbonates of ω,ω-bis(hydroxymethyl)-α,β-unsaturated alcohols. The use of chiral ligands gave the corresponding THF derivatives in low to moderate enantiomeric ratios. (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007)
3-烷基-3-羟甲基-5-
乙烯基四氢呋喃的有效立体选择性合成是通过 PdO 催化的 ω,ω-双(羟甲基)-α,β-不饱和醇的
碳酸甲酯环化反应进行的。手性
配体的使用产生了低到中等对映体比率的相应 THF 衍
生物。(© Wiley-
VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007)