Oxa-bridged cyclophanes 4/6 and 8/10 featuring thieno[2,3-b]thiophene ring and binol or bis-naphthol have been synthesized. The structures are assigned by 2D NMR data and the identity of 4 is also independently established by a single X-ray crystallography. From dynamic NMR analysis, the...
ChemInform Abstract: Carbamoyloxa-Bridged Cyclophanes: Macrocyclization by Double Transesterification of Dimethyl m-Xylylenedicarbamate with α,. omega.,-Dihydroxy Compounds.multi-membered O,N,S-heterocycles (with at least 2 different heteroatoms)
Lithium bromide-promoted three-component synthesis of oxa-bridged tetracyclic tetrahydroisoquinolines. Hetero- cycles 2007, 73, 729-742.Fayol, A.; Gonzalez-Zamora, E.; Bois-Choussy, M.; Zhu, J. Lithium Bromide-Promoted Three-Component Synthesis of Oxa-Bridged Tetracyclic Tetrahydroisoquinolines. ...
KRISHNA P. KALIAPPAN,等: " Design and synthesis of novel oxa-bridged isoxazolidines and 1,3-aminoalcohols ", 《TETRAHEDRON LETTERS》, vol. 46, no. 17, 19 March 2005 (2005-03-19), pages 3038Kaliappan K P, Das P, Kumar N. Tetrahedron Lett. 2005; 46 :3037–3040. doi: 10.1016...
ChemInform Abstract: Acid-Catalyzed Hydrolysis of Bridged Bi- and Tricyclic Compounds. Part 30. 7-Oxabicyclo(2.2.1)heptane: Kinetics and Mechanism ChemInform Abstract: Acid-Catalyzed Hydrolysis of Bridged Bi- and Tricyclic Compounds. Part 30. 7-Oxabicyclo(2.2.1)heptane: Kinetics and Mechanism......
The Cu-Cu(Ⅱ)和Cu-Zn(Ⅱ)oxamido-bridged dinuclear complexes were synthesized and characterized. Cu Cu(Ⅱ )和Cu Zn(Ⅱ )草酰胺桥联双核配合物被合成和表征 。 3) heteronuclear bridged complex 异核桥联配合物 4) Oxamide ligand 草酰胺桥联配体 ...
Symmetric and unsymmetric carbocyanines derived from 2,2-difluoro-3,1,2-(2 H)-oxaoxoniaboratines have been synthesized which contain the polymethylene bridge groups (CH 2) n ( n = 1, 2, 3) in the chromophore. As shown, these groups acting as electron-donor substituents deepen the dye ...
A new oxa-bridged seven-membered ring analog, hypoxylonone (1), and thirteen known compounds (2-14) were isolated from fungus Hypoxylon cf. subgilvum SWUF15-004. The structures were elucidated by the analysis of spectroscopic (IR, 1 D and 2 D NMR), HRESIMS and X-ray diffraction (...
oxa-bridged spirocyclesmacromoleculesA novel and efficient methodology for the stereocontrolled synthesis of spirocyclic oxa-bridged cyclooctanoids having multiple spiro centers is described. The cycloaddition reaction, which affords spirocyclic cyclooctanoids is highly sterospecific and has been supported ...
Gamez-Montano, R., Gonzalez-Zamora, E., Potier, P., Zhu J. (2002) Multicomponent domino process to oxa-bridged polyheterocycles and pyrrolopyridines, structural diversity derived from work-up procedure. Tetrahedron, 58, 6351- 6358.Gámez-Montaño, R., González-Zamora, E., Potier, P. ...