Thermally induced and transition metal catalyzed aza-Claisen rearrangement of 2-cyclopropylideneethyl imidates: A new entry to 1-aminocyclopropanecarboxylic acids
作者:Karine Estieu、Jean Ollivier、Jacques Salaün
DOI:10.1016/0040-4039(95)00380-u
日期:1995.4
(2-Cyclopropylideneethyl) acetimidates underwent thermally induced or palladium (II) catalyzed aza-Claisen rearrangement into 1-ethenylcyclopropyl acetamides, providing convenient precursors to 1-amino cyclopropanecarboxylic acids (ACCs). Due to the regioselectivity of the nucleophilic substitution of the π 1,1-dimethylene allyl palladium complexes by soft nucleophiles, the palladium (0) catalysis
(2-环丙叉基乙基)乙亚胺酸酯经过热诱导或钯(II)催化的氮杂-克莱森重排成1-乙烯基环丙基乙酰胺,为1-氨基环丙烷羧酸(ACC)提供了便利的前体。由于软亲核试剂对π1,1-二亚甲基烯丙基钯络合物进行亲核取代的区域选择性,钯(0)催化显然无效。