Tandem Addition/Cyclization of Alkynylzinc Reagents to Enantiopure 2-tert-Butyl-3,5-dimethyl-2,3-dihydroimidazol-4-oneN-Oxide: Potential Precursors of Quaternary α-Amino Acids
作者:Frédéric Cantagrel、Sandra Pinet、Yves Gimbert、Pierre Y. Chavant
DOI:10.1002/ejoc.200400861
日期:2005.7
A new enantiopure cyclic nitrone, a potential electrophilic alanine synthon, has been prepared. Its reaction with alkynylzinc reagents led to a tandem addition/cyclization reaction with complete regio- and stereoselectivity. The adducts are potential precursors of quaternary α-amino acids. (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2005)
一种新的对映体纯环硝酮,一种潜在的亲电子丙氨酸合成子,已被制备出来。它与炔基锌试剂的反应导致具有完全区域和立体选择性的串联加成/环化反应。加合物是季α-氨基酸的潜在前体。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2005)