• 대한화학회지
• /
• 제13권4호
• /
• pp.347-353
• /
• 1969

trans-1, 4-Dideutero-2-butenedial ditosylhydrazone has been synthesized to investigate the path of the acetylene formation in the pyrolysis of the dry lithium salt. Mass spectra showed that three isotope isomers of acetylene which might come from the strained ring compound, tricyclo[1, 1, 0, ] butane, were formed.

• 대한화학회지
• /
• 제13권4호
• /
• pp.341-346
• /
• 1969

The synthesis and pyrolysis of trans-2-butenedial ditosylhydrazone with sodium methoxide in aprotic solvents have been studied to investigate the products of pyrolysis. The pyrolysis of dry lithium salt of tosylhydrazone also has been made, one of its products was acetylene which might come from a certain strained ring compound.

• Bulletin of the Korean Chemical Society
• /
• 제35권4호
• /
• pp.989-993
• /
• 2014

The molecular structures of 2,6-diaza-1,3,5,7-tetraoxaspiro[3,3]heptane (1) and its dinitro derivative, 2,6-dinitro-2,6-diaza-1,3,5,7-tetraoxaspiro[3,3]heptane (2), were fully optimized without symmetry constraints at $HF/6-31G^*$ level of theory. A bisected conformation with respect to the ring is preferred with a $C_2$ symmetric structure. The density of each molecule in the crystalline state was estimated to 1.12 and 2.36 $g/cm^3$ using PM3/VSTO-3G calculations from the molecular volume. The heat of formation was calculated for two compounds at the CBS-4M level of theory. The detonation parameters were computed using the EXPLO5 software: D = 6282 m/s, $P_{C-J}$ = 127 kbar for compound 1, D = 7871 m/s, $P_{C-J}$ = 307 kbar for compound 2, and D = 6975 m/s, $P_{C-J}$ = 170 kbar for 60% compound 2 with 40% TNT. Specific impulse of compound 1 in aluminized formulation when used as monopropellants was very similar to that of the conventional ammonium perchlorate in the same formulation of aluminum.

• 한국군사과학기술학회지
• /
• 제6권1호
• /
• pp.108-115
• /
• 2003

TNAZ is a high explosive material because it is a highly strained ring compound containing one nitramine and gem dinditro groups. 1-t-butyl-3-nitroazetidine which was used as an intermediate previously, which declined the overall yield in synthesizing TNAZ. We obtained 1-t-butyl-3-hydroxymethyl-3-nitroazetidine in 64% yield from advances process which was used in synthesis of 1-t-butyl-3-nitroazetidine. The reaction pathway, shortening of reaction time, together with improvement of yield were studied too. We have obtained TNAZ in 85% yield.