CAS: 17455-23-1; Dicyclohexano-24-Crown-8

相似化合物

16069-36-6 37763-26-1 27035-39-8

上下游产品

dibenzo-24-crown ether

📜二苯并-24-冠醚-8 以15%的收率获得
参考文献:Kusov,S. Z.;Lubenets,Eh. G.;Semikolenov,V. A.;Kobrin,V. S.;Xmelnitski+,Izv. Co An Cccp. Xim. N.,(1989) N,S. 62-64
标题:Kusov,S. Z.;Lubenets,Eh. G.;Semikolenov,V. A.;Kobrin,V. S.;Xmelnitski+,Izv. Co An Cccp. Xim. N.,(1989) N,S. 62-64

专利信息

专利号:US-7125983-B2
优先权日:2000-11-29
标题:L-nucleic acid derivatives and process for the synthesis thereof
发明人：IIZUKA HAJIME; TOGASHI KAZUHIKO; SUZUKI TSUNEJI
权利人:MITSUI CHEMICALS INC
摘要:A novel method has been found to produce 2,2′-anhydro-1-(β-L-arabinofuranosyl)thymine as a novel useful intermediate compound. A novel method has been further found to produce thymidine from 2,2′-anhydro-1-(β-L-arabinofuranosyl)thymine. A novel method has been further found to L-2′-deoxyribose derivatives as a useful synthetic intermediate through L-2,2′-anhydro-5,6-dihydrocyclouridine derivative. According to these methods, synthesis of various L-nucleic acid derivatives, synthesis of which has been difficult till now.

专利号:US-5393511-A
优先权日:1988-10-10
标题 :Synthesis of zeolites of faujasite structure
发明人：DELPRATO FRANCOIS; GUTH JEAN-LOUIS; ANGLEROT DIDIER; ZIVKOV CATHERINE
权利人:ELF AQUITAINE
摘要:A process is provided for the preparation of zeolites belonging to the faujasite structural class and exhibiting a Si:Al ratio higher than 1 in which a reaction mixture is first produced, which has a pH higher than 10 and contains water, a source of tetravalent silicon, a source of trivalent aluminum, a source of hydroxide ions in the form of a strong inorganic or organic base and a structuring agent ST so as to produce an aluminosilicate gel having the desired composition to permit its crystallization into a compound of the faujasite structural class. The gel obtained is kept at a temperature, pressure and for a sufficient period to effect the crystallization of the gel into a precursor of the zeolite consisting of the zeolite trapping the structuring agent ST in its cavities and the precursor is then subjected to a calcination to destroy the structuring agent and to produce the zeolite. The structuring agent ST consists of at least one compound belonging to the group formed by the carbon-containing macrorings and macropolyrings which contain in the rings heteroatoms chosen from oxygen, nitrogen, silicon and sulphur, and which contain 10 to 24 atoms per ring. Precursors of the zeolites are also provided.

专利号:US-5098686-A
优先权日:1988-10-10
标题 :Synthesis of zeolites of faujasite structure
发明人：DELPRATO FRANCOIS; GUTH JEAN-LOUIS; ANGLEROT DIDIER; ZIVKOV CATHERINE
权利人:ELF AQUITAINE
摘要:PCT No. PCT/FR89/00522 Sec. 371 Date Jun. 8, 1990 Sec. 102(e) Date Jun. 8, 1990 PCT Filed Oct. 10, 1989 PCT Pub. No. WO90/03944 PCT Pub. Date Apr. 19, 1990.A process is provided for the preparation of zeolites belonging to the faujasite structural class and exhibiting a Si:Al ratio higher than 1 in which a reaction mixture is first produced which has a pH higher than 10 and contains water, a source of tetravalent silicon, a source of trivalent aluminum, a source of hydroxide ions in the form of a strong inorganic or orgnaic base and a structuring agent ST so as to produce an aluminosilicate gel having the desired composition to permit its crystallization into a compound of the faujasite structural class. The gel obtained is kept at a temperature, pressure and for a sufficient period to effect the crystallization of the gel into a precursor of the zeolite consisting of the zeolite trapping the structuring agent ST in its cavities and the precursor is then subjected to a calcination to destroy the structuring agent and to produce the zeolite. The structuring agent ST consists of at least one compound belonging to the group formed by the carbon-containing macrorings and macropolyrings which contain in the rings, heteroatoms chosen from oxygen, nitrogen, silicon and sulphur, and which contain 10 to 24 atoms per ring. Precursors of the zeolites are also provided.

专利号:WO-9003944-A1
优先权日:1988-10-10
标 题 :Synthesis of zeolites having a faujasite structure

专利号:EP-0364352-A1
优先权日:1988-10-10
标 题:Method for the synthesis of zeolites belonging to the structural family of faujasite, products obtained and their use in adsorption and catalysis

专利号:EP-0364352-B1
优先权日:1988-10-10
标 题:Method for the synthesis of zeolites belonging to the structural family of faujasite, products obtained and their use in adsorption and catalysis