Catalyst-free reactions under solvent-free conditions: microwave-assisted synthesis of heterocyclic hydrazones below the melting points of neat reactants.

Solid-state synthesis of heterocyclic hydrazones using microwaves under catalyst-free conditions

2H-Pyran-2-ones and their annelated analogs as multifaceted building blocks for the fabrication of diverse heterocycles

A mild synthesis of [1,2,4]triazolo[4,3-a]pyridines

The condensation of malonoaldehyde derivatives with either a 3-amino-[1,2,4]-triazole or a 3,5-diamino-[1,2,4]-triazole precursor was studied. In agreement with previous reports, two different bicycles, namely, bearing the regioisomeric [1,2,4]triazolo[1,5-a]pyrimidine (1) or [1,2,4]triazolo[4,3-a]pyrimidine (2) structural surrogates, could be obtained. We found that, depending on the triazole precursor, only one regioisomer resulted, either of the 1 or 2 series. We also observed that these two structural surrogates could be unambiguously differentiated by indirectly measuring their (15)N chemical shifts by (1)H-(15)N HMBC experiments. The occasional conversion of [1,2,4]triazolo[4,3-a]pyrimidines to the [1,2,4]triazolo[1,5-a]pyrimidine counterparts could be unequivocally determined by (15)N NMR data.

Differentiation between [1,2,4]triazolo[1,5‐a] pyrimidine and [1,2,4]triazolo[4,3‐a]‐ pyrimidine regioisomers by 1H ? 15N HMBC experiments

Synthesis of benzoylaminomethyl and aminomethyl substituted fused 1,2,4-triazoles

Transformation of 5,6,7,8-Tetrahydro-2H-1-benzopyran-2,8-diones with Hydrazines and Hydrazoic Acid: Synthesis of 8-Hydrazono-5,6,7,8-tetrahydro-2-oxo-2H-1-benzopyrans, Pyrano[2,3-c]azepines and Pyrido[2,3-c]azepines

Synthesis of 5,6,7,8-Tetrahydro-2H-1-benzopyran-2,5-diones and 1,5-Dihydro-2H-pyrrol-2-ones

Synthesis of Spiro-2-oxazolines

A Convenient Synthesis of N-[2-(Heteroarylhydrazono) Ethyl]Benzamides

Irena Music

Papers

Synthesis of benzoylaminomethyl and aminomethyl substituted fused 1,2,4-triazoles

Transformation of 5,6,7,8-Tetrahydro-2H-1-benzopyran-2,8-diones with Hydrazines and Hydrazoic Acid: Synthesis of 8-Hydrazono-5,6,7,8-tetrahydro-2-oxo-2H-1-benzopyrans, Pyrano[2,3-c]azepines and Pyrido[2,3-c]azepines

Synthesis of 5,6,7,8-Tetrahydro-2H-1-benzopyran-2,5-diones and 1,5-Dihydro-2H-pyrrol-2-ones

Synthesis of Spiro-2-oxazolines

A Convenient Synthesis of N-[2-(Heteroarylhydrazono) Ethyl]Benzamides