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이병일,오정환,김형태,김봉현,김영규 한국공업화학회 2016 한국공업화학회 연구논문 초록집 Vol.2016 No.1
Azapropellanes are new strained molecular structure that recently reported by our group. They are promising building blocks to synthesize highly strained molecular explosives which calculated to exceed the explosive performance of well-known high explosives such as Hexanitrohexaazaisowurtzitane (CL-20) and Octanitrocubane (ONC). We have recently published the synthetic route and nitration of several novel pentaaza[3.3.3]propellanes. In this presentation, we will report the nitration study of some hexaaza[3.3.3]propellanes and their characterization results.
High pressure nitration of pentaazapropellane
이병일,오정환,신혜정,김진석,김영규 한국공업화학회 2016 한국공업화학회 연구논문 초록집 Vol.2016 No.0
Though CL-20 and ONC are well-known High Energy Materials (HEMs) in recent period, they haven`t been commercially available because of their high sensitivity toward impact and friction stimuli. Accordingly, development of high-energy-density materials with decreased sensitivity to thermal shock and friction and higher performance is a main theme in current energetic materials synthesis. Azapropellanes are promising molecular explosive, not only they are highly strained, but also more stable than cubane structure which is very reactive to any stimulus. In addition, nitration compound of azapropellane has N-NO2 groups releasing high energy at explosion. Previously, we reported the nitration product of azaprollane under normal pressure. Herein we will present experimental results of high pressure nitration of azapropellane
이병일,신혜정,신나라,조재영,김영규 한국공업화학회 2016 한국공업화학회 연구논문 초록집 Vol.2016 No.1
Nitroazoles are expected to be the promising building blocks for new high explosives as they have aromaticity and high heat of formations. 3,4,5-trinitropyrazole(TNP) and 2,4,5-trinitroimidazole(TNI) are well known azole based molecular explosives. Several synthetic routes were reported to synthesize those trinitroazoles efficiently. Nitrodeiodination is one of the most popular method to synthesize trinitroazoles. Herein, we will present energetic functionalization studies on triiodopyrazole and triiodoimidazole.
이병일,이현욱,최호림,최형석,김준범,민경대,권세원,Lee, Byung-Ill,Lee, Hyun-Uk,Choi, Ho-Rim,Choi, Hyung-Suk,Kim, Jun-Bum,Min, Kyoung-Dae,Kwon, Sai-Won 대한정형외과스포츠의학회 2007 대한정형외과스포츠의학회지 Vol.6 No.2
대흉근 파열은 주로 활동적인 젊은 성인이나 격렬한 경기와 관련된 운동선수에게서 발생하고, 특히 웨이트 트레이닝 도중에 발생하는 경우가 많다고 알려져 있다. 흔치 않은 손상이 나 최근 스포츠 활동 인구의 증가로 대흉근 파열의 발생은 증가 추세에 있으며 이에 따라 기능적 및 미용적 회복을 위한 다양한 수술적 치료 방법이 소개되고 있다. 저자들은 벤치프레스 도중 발생하였으나 진단이 불명확하여 적절한 치료를 시행하지 못하고 수상 후 5개월 만에 진단된 대흉근 파열에 대하여 골경유 봉합 및 봉합나사를 이용한 봉합술을 시행한 1례를 경험하였기에 문헌고찰과 함께 보고하고자 한다. Rupture of the pectoralis major muscle may occur in youngers or athletes associated with extreme sports, especially during the weight training. It is uncommon, but the incidence is increased by the recent growth of athletic population, According to the drift, variable methods of operative treatment for the functional and cosmetic recovery are introduced. We report a case of pectoralis major muscle rupture which was successfully repaired using transosseous repair and suture anchors five months after the initial injury during the bench-pressing.
Protection study of pentaazapropellane
이병일,김남태,오정환,김영규 한국공업화학회 2015 한국공업화학회 연구논문 초록집 Vol.2015 No.1
High energy materials are divided into three classes; propellants, explosives and pyrotechnics. Our group is interested in synthesis of high explosives. Propellanes are high-strained organic compounds which can be applied to several fields such as medicinal chemistry and high energy materials. Breakage of propellane structure releases the ringstrained energy and for that reason propellanes are promising basic skeleton of high energy materials. We choose azapropllanes as basic skeleton of new high explosives, because of their molecular structure and high N/O content. We have recently published the synthesis of several novel pentaaza[3.3.3]propellanes. As we reported, protecting groups play an important role in the synthesis of pentaaza[3.3.3]propellanes. In this presentation, we will report the further protection study of some pentaaza[3.3.3]propellanes and their characterization results.
Coupling study of azole-based structure
이병일,김남태,오정환,권소현,이보람,김영규 한국공업화학회 2015 한국공업화학회 연구논문 초록집 Vol.2015 No.1
Azoles are five-membered nitrogen heterocylic ring compounds that known to have aromaticity and high heat of formations. Because of their stable chemical properties, azoles are expected to be the good building blocks of ionic liquids chemistry and high explosives chemistry. Molecular structure, heats of formation and the N/O/C balance in the molecules are important aspects that define explosive performances of energetic materials. Recent studies in high energetic materials are focused on adopting N-oxide and polynitro groups to get an ideal zero oxygen balance of high explosive molecules. Herein, we will present some azole structures as basic skeleton for potential high molecular explosives and their efficient synthetic ways via coupling reactions with their characterization results.
Nitration study of pentaazapropellanes
이병일,김형태,신나라,김남태,오정환,김봉현,김진석,김영규 한국공업화학회 2015 한국공업화학회 연구논문 초록집 Vol.2015 No.1
Explosive performances of energetic materials are influenced by their molecular structure, heats of formation, and the N/O/C balance in the molecules. Octanitrocubane (ONC) is one of the most powerful high explosives known to date. Azapropellanes with a high N/O content are rather strained but easier to synthesize than cubane. Some nitroazapropellanes with the N-NO<sub>2</sub> groups have been calculated to release higher detonation power than well-known RDX or HMX. We have recently published the synthesis of several novel pentaaza[3.3.3]propellanes and their N-nitro derivatives as shown below. In this presentation, we will report the further nitration study of some pentaaza[3.3.3]propellanes and their characterization results.