Keggin type phosphotungstic acid encapsulated chromium (III) terephthalate metal organic framework as active catalyst for Biginelli condensation

- The Biginelli reaction was studied.
- Heteropolyacid H3PW12O40 (PW) encapsulated into MIL101 was used as catalyst.
- Effect of MIL-101 on catalytic behaviour of PW was demonstrated.
- The catalyst is easily recoverable and reusable without much change in activity.