A Synthetic Strategy for the Preparation of Fused [5,6,5,5]-Tetracyclic Energetic Compounds.

This study explores a straightforward synthetic strategy for preparing fused [5,6,5,5]-tetracyclic energetic compounds. Compound 4 has a high thermostability ( T d = 307 °C), which is comparable to that of traditional heat-resistant explosive HNS ( T d = 318 °C), but a higher detonation velocity (8262 m s -1 ) than HNS (7612 m s -1 ). These results indicate that compound 4 deserves further investigation as a potential heat-resistant explosive.