Application of samarium diiodide (SmI<sub>2</sub>)-induced reduction of γ-acetoxy-α,β-enoates with α-specific kinetic electrophilic trapping for the synthesis of amino acid derivatives
作者:Akira Otaka、Akira Yukimasa、Junko Watanabe、Yoshikazu Sasaki、Sinya Oishi、Hirokazu Tamamura、Nobutaka Fujii
DOI:10.1039/b303718e
日期:——
γ-Acetoxy-α,β-enoates were easily reduced by samarium diiodide (SmI2) in THF to generate samarium dienolates which were kinetically trapped with ease at their α-positions by electrophiles (proton, aldehydes or ketones) to yield (E)-alkene dipeptide isosteres or γ-amino acid derivatives in high chemical yields.
γ-乙酰氧基-α,β-烯酸酯很容易被 THF 中的二碘化钐 (SmI2) 还原,生成二烯酸钐,后者在动力学上很容易被亲电子试剂(质子、醛或酮)捕获在其 α-位置,从而产生 (E )-烯烃二肽电子等排体或γ-氨基酸衍生物的化学产率很高。