Bhaskaran R.P.Janardhanan J.C.Babu B.P.2021-05-052021-05-052020ChemistrySelect Vol. 5 , 16 , p. 4822 - 4825https://doi.org/10.1002/slct.202000719https://idr.nitk.ac.in/handle/123456789/16425An 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, WeinheimArticle