{"title":"对 N-甲基基团进行改性,以获得能量-稳定性平衡良好的新型高能熔铸材料","authors":"Fang Chen, Siwei Song, Qinghua Zhang, Yi Wang","doi":"10.1055/a-2256-2800","DOIUrl":null,"url":null,"abstract":"<p>The energy and stability properties of energetic materials are often contradictory to each other (e.g., high energy vs low thermal stability). There is no doubt that it is still challenging to explore the effective balance between energetic performance and molecular stability, especially for melt-castable materials. In this study, we selected the 4-methoxy-3,5-dinitropyrazole framework and a stable nitro group to design a new energetic melt-castable compound, namely 4-methoxy-3,5-dinitro-1-(nitromethyl)-1<i>H</i>-pyrazole (MDNNMP). Compared with the <i>N</i>-methylation product DMDNP and the nitrato-substituted derivative MC-7, MDNNMP exhibits a better balanced performance, including good thermal stability (<i>T<sub>d</sub>\n</i>: 203.7 °C), detonation velocity (<i>D<sub>v</sub>\n</i>: 8099 m s<sup>–1</sup>) and impact sensitivity (20 J). The favorable balanced performance of MDNNMP suggests that it is a suitable candidate as a high-performance melt-castable material. Additionally, compared with the nitratomethyl group, the nitromethyl group demonstrates superior advantages in performance regulation.</p> ","PeriodicalId":22319,"journal":{"name":"Synlett","volume":"36 1","pages":""},"PeriodicalIF":1.4000,"publicationDate":"2024-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Modification of an N-Methyl Group toward a New Energetic Melt-Castable Material with a Good Energy-Stability Balance\",\"authors\":\"Fang Chen, Siwei Song, Qinghua Zhang, Yi Wang\",\"doi\":\"10.1055/a-2256-2800\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>The energy and stability properties of energetic materials are often contradictory to each other (e.g., high energy vs low thermal stability). There is no doubt that it is still challenging to explore the effective balance between energetic performance and molecular stability, especially for melt-castable materials. In this study, we selected the 4-methoxy-3,5-dinitropyrazole framework and a stable nitro group to design a new energetic melt-castable compound, namely 4-methoxy-3,5-dinitro-1-(nitromethyl)-1<i>H</i>-pyrazole (MDNNMP). Compared with the <i>N</i>-methylation product DMDNP and the nitrato-substituted derivative MC-7, MDNNMP exhibits a better balanced performance, including good thermal stability (<i>T<sub>d</sub>\\n</i>: 203.7 °C), detonation velocity (<i>D<sub>v</sub>\\n</i>: 8099 m s<sup>–1</sup>) and impact sensitivity (20 J). The favorable balanced performance of MDNNMP suggests that it is a suitable candidate as a high-performance melt-castable material. Additionally, compared with the nitratomethyl group, the nitromethyl group demonstrates superior advantages in performance regulation.</p> \",\"PeriodicalId\":22319,\"journal\":{\"name\":\"Synlett\",\"volume\":\"36 1\",\"pages\":\"\"},\"PeriodicalIF\":1.4000,\"publicationDate\":\"2024-02-28\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Synlett\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://doi.org/10.1055/a-2256-2800\",\"RegionNum\":4,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"CHEMISTRY, ORGANIC\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Synlett","FirstCategoryId":"92","ListUrlMain":"https://doi.org/10.1055/a-2256-2800","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, ORGANIC","Score":null,"Total":0}
Modification of an N-Methyl Group toward a New Energetic Melt-Castable Material with a Good Energy-Stability Balance
The energy and stability properties of energetic materials are often contradictory to each other (e.g., high energy vs low thermal stability). There is no doubt that it is still challenging to explore the effective balance between energetic performance and molecular stability, especially for melt-castable materials. In this study, we selected the 4-methoxy-3,5-dinitropyrazole framework and a stable nitro group to design a new energetic melt-castable compound, namely 4-methoxy-3,5-dinitro-1-(nitromethyl)-1H-pyrazole (MDNNMP). Compared with the N-methylation product DMDNP and the nitrato-substituted derivative MC-7, MDNNMP exhibits a better balanced performance, including good thermal stability (Td: 203.7 °C), detonation velocity (Dv: 8099 m s–1) and impact sensitivity (20 J). The favorable balanced performance of MDNNMP suggests that it is a suitable candidate as a high-performance melt-castable material. Additionally, compared with the nitratomethyl group, the nitromethyl group demonstrates superior advantages in performance regulation.
期刊介绍:
SYNLETT is an international journal reporting research results and current trends in chemical synthesis in short personalized reviews and preliminary communications. It covers all fields of scientific endeavor that involve organic synthesis, including catalysis, organometallic, medicinal, biological, and photochemistry, but also related disciplines and offers the possibility to publish scientific primary data.