Synthesis, characterization and thermolysis studies on 3,7-dinitro-1,3,5,7-tetraazabicyclo[3,3,1]nonane (DPT): A key precursor in the synthesis of most powerful benchmark energetic materials (RDX/HMX) of today

Investigation of the Effect of Metallic Lewis Acid on the Nitrolysis of [3,7‐Diacetyl‐1,3,5,7‐tetraazabicyclo(3.3.1)‐nonane] and Hexamine

“…The nitrolysis of DAPT initially performed using Bi(NO 3 ) 3 Figure 1. Two possible mechanisms for the formation of M_1 are proposed in Figure 2.…”

“…Some of these ternary mixed reagents tested to be of high efficiency were also used in the nitrolysis of HA. Theoretically, on the basis of hard-soft and acid-base principle 7,8 and the theoretical stabilized energy of metallic Lewis salts with 3 NO , − a reasonable explanation for the different experimental results was made. We mainly elaborated the key roles of the cation and anion of metallic Lewis salt.…”

Preparation of HMX by Catalytic Nitrolysis of DPT in AIL-N2O5-HNO3System

“…[35][36][37][38][39][40][41] DPT was prepared by a known method from urea with a purity of more than 99%. 4 All other chemicals (AR grade) were commercially available and used without further purification. The purity of HMX was tested by high performance liquid chromatography (HPLC) with a reverse phase micro C18 column (Waters Alliance HPLC system), and the eluent was a mixture of methanol and water (70:30) with a flow rate of 1 mL/min.…”

“…DPT, prepared from nitrourea and/or dinitrourea, 4,[8][9][10] can also synthesize HMX by direct nitrolysis. This process avoids using excess acetic acid and acetic anhydride, which can reduce the total cost remarkably.…”

Synthesis of 3,7‐Dinitro‐1,3,5,7‐tetraazabicyclo‐[3,3,1]nonane (DPT) Using Task‐Specific Ionic Liquids as Recoverable Catalysts

“…3,7-Dinitro-1,3,5,7-tetraazabicyclo[3,3,1]nonane (DPT) is a key precursor to octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine (HMX) 1,2 , the most powerful explosive manufactured in bulk at present. Strecker et al 3 invented a process for producing DPT by utilizing nitrourea as starting material, but this approach involved long reaction times and unsatisfactory yield of DPT.…”