Microwave-assisted synthesis of pyrazolo[3,4-b]pyridine- spirocycloalkanediones by three-component reaction of 5-aminopyrazole derivatives, paraformaldehyde and cyclic β-diketones

1. Quiroga, J.
2. Trilleras, J.
3. Pantoja, D.
4. Abonía, R.
5. Insuasty, B.
6. Nogueras, M.
7. Cobo, J.