Cite

    Guodong Zhu et al.. “Asymmetric [3+2] cycloaddition of 3-amino oxindole-based azomethine ylides with α, β-ynones: a straightforward approach to spirooxindoles incorporating 2, 5-dihydropyrroles and pyrroles.” Chemical communications, vol. 53, no. 34, 2017, pp. 4714–4717. http://access.bl.uk/ark:/81055/vdc_100045746407.0x000054