Bhaskaran, R.P.Janardhanan, J.C.Babu, B.P.2026-02-052020ChemistrySelect, 2020, 5, 16, pp. 4822-4825https://doi.org/10.1002/slct.202000719https://idr.nitk.ac.in/handle/123456789/23932An efficient, metal-free synthesis of pyrazoles and chromenopyrazoles from aldehyde hydrazones and acetylenic esters has been developed. A library of molecules with diverse functional groups has been synthesized using substituted hydrazones and alkynes, both symmetrical and unsymmetrical ones. The derivatives were isolated in moderate to good yields. © 2020 Wiley-VCH Verlag GmbH & Co. KGaA, WeinheimChromenoneHeterocyclesHydrazonePolycylesPyrazole