The ability of a chiral isothiourea to promote the regio- and enantioselective O- to C-carboxyl transfer of a series of 3-alkyl-5-aryl- and 5-methyl-3-phenylfuranyl carbonates is examined, generating preferentially the α-regioisomers (α/γ up to 83:17) with high asymmetric induction (up to 83% ee).
研究了手性异
硫脲促进一系列 3-烷基-5-芳基-和 5-甲基-
3-苯基呋喃基
碳酸酯的 O-到 C-羧基的区域和对映体选择性转移的能力,优先生成了具有高度不对称诱导(高达 83% ee)的 δ-区域异构体(δ/δ³ 高达 83:17)。