Addition of lithiated methoxyallene to aziridine derivatives provided the expected primary addition products. The less substituted carbon of the aziridine ring was attacked selectively. The primary adducts could be converted to enantiopure piperidine derivatives or β-amino acid derivatives. The unexpected reactions lead to a tricyclic sulfonamide and to alkynyl-substituted aminoethers. The efficient two-step conversion of a piperidone derivative to a benzomorphan demonstrates the potential of this approach to biologically active compounds.
对亚胺衍生物的甲氧基丙炔锂加成反应产生了预期的主要加成产物。亚胺环的较少取代的碳原子被选择性地攻击。主要加合物可以转化为对映纯的哌啶衍生物或β-氨基酸衍生物。意外的反应导致三环磺酰胺和烷基取代的氨基醚。将哌啶酮衍生物有效地转化为苯吗啡表明了这种方法对生物活性化合物的潜力。