Cite

    Kevin Ng et al.. “A single-flask synthesis of α-alkylidene and α-benzylidene lactones from ethoxyacetylene, epoxides/oxetanes, and carbonyl compounds.” Tetrahedron letters, vol. 57, no. 3, 2016, pp. 415–419. http://access.bl.uk/ark:/81055/vdc_100030398632.0x000024