Green synthesis of 1,4-dihydropyrano[2,3-c]pyrazole derivatives using maltose as biodegradable catalyst

Synthesis of 6-amino-4-aryl-3-methyl-1,4-dihydropyrano[2,3-c]pyrazole-5-carbonitriles by heterogeneous reusable catalysts

(2013) Hamid Reza Shaterian et al.   RESEARCH ON CHEMICAL INTERMEDIATES

One-pot multicomponent synthesis of highly substituted piperidines using p-toluenesulfonic acid monohydrate as catalyst

(2011) Seyed Sajad Sajadikhah et al.   MONATSHEFTE FUR CHEMIE

An efficient and simple approach for the synthesis of pyranopyrazoles using imidazole (catalytic) in aqueous medium, and the vibrational spectroscopic studies on 6-amino-4-(4′-methoxyphenyl)-5-cyano-3-methyl-1-phenyl-1,4-dihydropyrano[2,3-c]pyrazole using density functional theory

(2011) Aisha Siddekha et al.   SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY

One-pot three-component synthesis of functionalized spirolactones by means of reaction between aromatic ketones, dimethyl acetylenedicarboxylate, and N-heterocycles

(2011) Malek Taher Maghsoodlou et al.   TETRAHEDRON

l-Proline as an efficicent catalyst for the multi-component synthesis of 6-amino-4-alkyl/aryl-3-methyl-2,4-dihydropyrano[2,3-c]pyrazole-5-carbonitriles in water

(2011) Hormi Mecadon et al.   TETRAHEDRON LETTERS

γ-Alumina as a recyclable catalyst for the four-component synthesis of 6-amino-4-alkyl/aryl-3-methyl-2,4-dihydropyrano[2,3-c]pyrazole-5-carbonitriles in aqueous medium

(2011) Hormi Mecadon et al.   TETRAHEDRON LETTERS

Greener approach towards the facile synthesis of 1,4-dihydropyrano[2,3-c]pyrazol-5-yl cyanide derivatives at room temperature

(2010) Ravi S. Balaskar et al.   CHINESE CHEMICAL LETTERS

Nanosized magnesium oxide as a highly effective heterogeneous base catalyst for the rapid synthesis of pyranopyrazoles via a tandem four-component reaction

(2010) Maryam Babaie et al.   Arabian Journal of Chemistry