硝基芳烃与带有离去基团和吸电子基团的仲和叔碳负离子的反应:二氢萘[ 2,1- c ]异恶唑N-氧化物和二氢异恶唑[4,3- f ]喹啉N-氧化物的方法
摘要:
2-硝基萘(1)和6-硝基喹啉(2)与衍生自带有离去基团和吸电子基团的亚甲基和次甲基的仲和叔碳负离子(例如,氯乙酸甲酯,氯乙酸乙酯,氯乙腈,甲基在低温下在氢化钠/ N,N-二甲基甲酰胺体系中的2-氯丙酸酯,2-氯丙酸酯和2-氯丙腈)制得相应的二氢萘[ 2,1- c ]异恶唑N-氧化物3和二氢异异恶唑[4] ,3- f ]喹啉N-氧化物4。另一方面,硝基芳烃1和2与氢化钠/四氢呋喃系统中的仲碳负离子反应,生成相应的常规替代性亲核取代(VNS)产物5和6。
LIQUID CRYSTAL ALIGNMENT AGENT, AND LIQUID CRYSTAL ALIGNMENT FILM AND LIQUID CRYSTAL DISPLAY ELEMENT FORMED FROM THE LIQUID CRYSTAL ALIGNMENT AGENT
申请人:Tsai Tsung-Pei
公开号:US20120101224A1
公开(公告)日:2012-04-26
A liquid crystal alignment agent includes a polymer and an organic solvent for dissolving the polymer. The polymer is obtained by subjecting a diamine composition and a tetracarboxylic dianhydride compound to a polymerization reaction. The diamine composition includes a first diamine compound, a second diamine compound, and a third diamine compound as defined in the specification.
A liquid crystal alignment film formed from the liquid crystal alignment agent and a liquid crystal display element including the liquid crystal alignment film are also disclosed.
Base-induced reactions of polynitroarenes with methyl 2-chloropropionate
作者:G. Patrick Stahly、Barbara C. Stahly、John R. Maloney
DOI:10.1021/jo00238a040
日期:1988.2
STAHLY, G. PATRICK;STAHLY, BARBARA C.;MALONEY, JOHN R., J. ORG. CHEM., 53,(1988) N 3, 690-692
作者:STAHLY, G. PATRICK、STAHLY, BARBARA C.、MALONEY, JOHN R.
DOI:——
日期:——
US8673177B2
申请人:——
公开号:US8673177B2
公开(公告)日:2014-03-18
Reactions of nitroarenes with secondary and tertiary carbanions bearing both a leaving group and electron-withdrawing group: An approach to dihydronaphth[2,1-<i>c</i>]isoxazole<i>N</i>-oxides and dihydroisoxazolo[4,3-<i>f</i>]quinoline<i>N</i>-oxides
作者:Hiroshi Maruoka、Yukihiko Tomioka
DOI:10.1002/jhet.5570400613
日期:2003.11
2-Nitronaphthalene (1) and 6-nitroquinoline (2) underwent direct cyclocondensation with secondary and tertiary carbanionsderivedfrom a methylene and methine group bearing both a leaving group and electron-withdrawing group (e.g., methyl chloroacetate, ethyl chloroacetate, chloroacetonitrile, methyl 2-chloropropionate, ethyl 2-chloropropionate and 2-chloropropionitrile) in the sodium hydride/N,N-dimethylformamide
2-硝基萘(1)和6-硝基喹啉(2)与衍生自带有离去基团和吸电子基团的亚甲基和次甲基的仲和叔碳负离子(例如,氯乙酸甲酯,氯乙酸乙酯,氯乙腈,甲基在低温下在氢化钠/ N,N-二甲基甲酰胺体系中的2-氯丙酸酯,2-氯丙酸酯和2-氯丙腈)制得相应的二氢萘[ 2,1- c ]异恶唑N-氧化物3和二氢异异恶唑[4] ,3- f ]喹啉N-氧化物4。另一方面,硝基芳烃1和2与氢化钠/四氢呋喃系统中的仲碳负离子反应,生成相应的常规替代性亲核取代(VNS)产物5和6。