申请人:AGENCY FOR DEFENSE DEVELOPMENT 국방과학연구소(319980058262) BRN ▼314-83-03869
公开号:KR101600896B1
公开(公告)日:2016-03-08
본 발명은 신규한 고에너지 노보넨계 화합물 및 이를 포함하는 고에너지 가소제 조성물에 관한 것이다. 본 발명의 노보넨계 화합물은 에너지기가 함유된 고리긴장 에너지기를 포함하여 에너지 밀도가 높을 뿐 아니라, 휘발성이 낮다. 또한, 본 발명의 노보넨계 화합물은 25℃에서 66 cP(centi-poise) 이하의 점도 및 낮은 상 전이온도를 가진다. 따라서, 본 발명의 노보넨계 화합물을 포함하는 가소제 조성물은 충진제의 변형을 진행시키지 않는 고에너지 가소제로서 기능할 수 있는 우수한 물성 및 안정성을 가져 화약(예컨대, 복합화약) 또는 추진제에 효과적으로 적용될 수 있다.
This is the translated text in Chinese:
本发明涉及一种新型高能量诺伯烯类化合物及含有该化合物的高能量推进剂组合物。本发明的诺伯烯类化合物包括含有能量密度高的环张力能量基的,不仅能量密度高,而且挥发性低。此外,本发明的诺伯烯类化合物具有在25℃下低于66 cP(厘帕)的粘度和低的相变温度。因此,含有本发明的诺伯烯类化合物的推进剂组合物可以作为不会改变填充剂性质的高能量推进剂,具有优异的性能和稳定性,可有效应用于火药(例如,复合火药)或推进剂中。
PROCESS FOR PRODUCING HIGH PURITY EXO-ALKENYLNORBORNENE
申请人:Bell Andrew
公开号:US20090054714A1
公开(公告)日:2009-02-26
Embodiments of the present invention are directed generally to methods for producing high purity exo-alkenylnorbornenes from a mixture of conformational isomers thereof.
本发明的实施例通常涉及从共轭异构体混合物中生产高纯度的外部烯基去氢脱环戊烷。
Synthesis and Heterogenization of Siloxane Functionalized Cobalt Complex: Potential Catalyst for Oxidation of Alcohols
Cobalticinium complex containing siloxane moiety on ligand center was first time synthesized, characterized and heterogenized on the surface of SBA-15 molecular sieves. FT-IR and 29Si-MAS-NMR spectrum evidence the successful grafting of the cobaltcomplex on the surface of SBA-15. N2 sorption isotherm of cobalticinium complex grafted sample showed the decrease in surface area, pore volume, further
The Importance of Hydrogen Bonding to Stereoselectivity and Catalyst Turnover in Gold-Catalyzed Cyclization of Monoallylic Diols
作者:Thomas Ghebreghiorgis、Berenger Biannic、Brian H. Kirk、Daniel H. Ess、Aaron Aponick
DOI:10.1021/ja306333a
日期:2012.10.3
Importantly, intramolecular proton transfer and elimination provides an extremely efficient avenue for catalyst regeneration from the Au-C σ-bond intermediate, in contrast to other Au-catalyzed cyclization reactions where this intermediate severely restricts catalyst turnover. The origin of chirality transfer and the ensuing alkene stereochemistry is also the result of strong hydrogen-bonding interactions
密度泛函计算和实验用于检查单膦金催化的单烯丙基二醇环化反应中手性转移的机理、反应性和起源。环化的最低能量途径涉及两步序列,首先通过非烯丙基羟基与 Au 配位烯烃的反加成形成分子内 CO 键,然后协调氢转移/反消除以释放水。发现协同 S(N)2' 型过渡态的能量显着更高。由于二醇基团之间的氢键引起对烯烃的亲核攻击,然后在形成 CO 键后二醇基团之间发生质子转移,因此两步环化途径非常容易。重要的,与其他 Au 催化的环化反应相比,分子内质子转移和消除为从 Au-C σ 键中间体再生催化剂提供了极其有效的途径,而其他 Au 催化的环化反应严重限制了催化剂的周转。手性转移的起源和随之而来的烯烃立体化学也是二醇基团之间强氢键相互作用的结果。在 CO 键形成步骤中,必要的氢键使束缚的亲核部分偏向于在轴向或赤道位置具有取代基的椅子状构象,从而决定反应的立体化学结果。由于在整个反应过程中保持这种氢键,因此
Chelating Ruthenium Phenolate Complexes: Synthesis, General Catalytic Activity, and Applications in Olefin Metathesis Polymerization
Cyclic Ru‐phenolates were synthesized, and these compounds were used as olefinmetathesis catalysts. Investigation of their catalyticactivity pointed out that, after activation with chemical agents, these catalysts promote ring‐closing metathesis (RCM), enyne and cross‐metathesis (CM) reactions, including butenolysis, with good results. Importantly, these latent catalysts are soluble in neat dicyclopentadiene