CAS: 57489-77-7; 5,7-Dichloropyrazolo[1,5-A]Pyrimidine

相似化合物

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上下游产品

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4,5-Dihydropyrazolo[1,5-A]Pyrimidine-5,7-Diol置于n,N-二甲基苯胺,三氯氧磷体系中,化学反应 12.0H,以77%的收率获得产物5,7-二氯吡唑并[1,5-A]嘧啶
参考文献:유기 화합물 및 이를 포함하는 유기 전계 발광 소자
标题:유기 화합물 및 이를 포함하는 유기 전계 발광 소자
摘要:该发明涉及一种有优异发光性能的新型化合物及其通过将其包含在一个或多个有机层中来提高有机电致发光器件的发光效率,驱动电压,寿命等特性.

专利信息

专利号:US-8076479-B2
优先权日:2006-08-28
标题 :Process and intermediates for the synthesis of (3-alkyl-5-piperidin-1-yl-3,3a-dihydro-pyrazolo[1,5-a]pyrimidin-7-yl)-amino derivatives and intermediates
发明人：CHEN FRANK XING; KEERTIKAR KARTIK M; KUO SHEN-CHUN; LEE HONG-CHANG; RAGHAVAN RAMANI R; WU GEORGE G; XIE JI
权利人:CHEN FRANK XING; KEERTIKAR KARTIK M; KUO SHEN-CHUN; LEE HONG-CHANG; RAGHAVAN RAMANI R; WU GEORGE G; XIE JI; SCHERING CORP
摘要:Disclosed is a process for the synthesis of compounds of Formula I n nby sequentially aminating, first with a primary amine and then with a secondary amine, an intermediate compound of the structure of Formula E1,n n nwherein R 1 is a linear, branched, or cyclic alkyloxy functional group of the structure (—R 2a —OH), R 2a is a linear, branched or cyclic alkyl group, R 2 is a linear, branched or cyclic alkyl group, and R 3 is an alkylene-heterocycle, said process comprising forming intermediate compound of Formula E1 by reacting, in a refluxing reaction solvent selected from alcohols having 5 or less carbon atoms and mixtures of two or more thereof, a methanol solution of a salt of a 4-alkyl-3-amino-pyrazole compound of Formula C1,n n nwith a diamidization reagent selected from dimethylmalonate, monomethylmalonyl-chloride, and malonyl dichloride in the presence of a Lewis base having sufficient proton affinity to abstract a proton from the 1-position nitrogen on the pyrazole ring.

专利号:US-2008058518-A1
优先权日:2006-08-28
标 题 :Process and intermediates for the synthesis of (3-alkyl-5-piperidin-1-yl-3,3a-dihydro-pyrazolo[1,5-a]pyrimidin-7-yl)-amino derivatives and intermediates

专利号:EP-2057166-B1
优先权日:2006-08-28
标题 :Process and intermediates for the synthesis of (3-alkyl-5-piperidin-1-yl-3,3a-dihydropyrazolo[1,5-a]pyrimidin-7-yl)-amino derivatives

专利号:EP-2057166-A2
优先权日:2006-08-28
标题 :Process and intermediates for the synthesis of (3-alkyl-5-piperidin-1-yl-3,3a-dihydro- pyrazoloý1,5-a¨pyrimidin-7-yl)-amino derivatives and intermediates

专利号:CA-2661737-C
优先权日:2006-08-28
标 题 :Process and intermediates for the synthesis of (3-alkyl-5-piperidin-1-yl-3,3a-dihydro-pyrazolo[1,5-a]pyrimidin-7-yl)-amino derivatives and intermediates

专利号:CN-101627041-A
优先权日:2006-08-28
标 题:Methods and intermediates for the synthesis of (3-alkyl-5-piperidin-1-yl-3,3A-dihydro-pyrazolo[1,5-A]pyrimidin-7-yl)-amino derivatives and intermediates body