中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | (R)-(+)-2,2'-Dimethoxy-1,1'-binaphthalene-3,3'-dicarboxylic acid | 135312-22-0 | C24H18O6 | 402.403 |
—— | dimethyl 2,2'-dimethoxy-1,1'-bunaphthalene-3,3'-dicarboxylate | —— | C26H22O6 | 430.457 |
二甲基2,2'-二羟基-1,1'-联萘-3,3'-二羧酸酯 | dimethyl 2,2'-dihydroxy-1,1'-binaphthalene-3,3'-dicarboxylate | 18531-91-4 | C24H18O6 | 402.403 |
(S)-(-)-2,2’-二甲氧基-1,1’-联萘 | 2,2'-dimethoxy-1,1'-binaphthyl | 75685-01-7 | C22H18O2 | 314.384 |
中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | N3,N3'-bis-(2,2'-dimethoxy-3'-(2,2,2-trifluoroacetamido)-1,1'-binaphthyl-3-yl)-2,2'-dimethoxy-1,1'-binaphthyl-3,3'-dicarboxamide | —— | C72H52F6N4O10 | 1247.22 |
Synthesis of a series of novel 2,2'-bipyridine-based ligands bearing the axially chiral 2,2'-dialkoxy-1,1'-binaphthalene units is presented. The oxydimethylene, amidomethylene and amido spacers have been utilised to link the 3 or 3,3' positions of the binaphthalene skeleton with the 6 or 6,6' positions of the 2,2'-bipyridine moieties. The ligands have been synthesised in both racemic and enantiomerically pure
Three "basket handle" porphyrins have been prepared by condensation of tetrakis-(α,β,α,β-2-aminophenyl)porphyrin atropoisomer with 1,1′-binaphthyl, 2,2′-dimethoxy, -3,3′-dicarbonylchloride, -3,3′-diacetylchloride and -3,3′-dipropanoylchloride. The epoxidation of styrene with the three iron catalysts, obtained after metalation of the free porphyrins, occurs with good yields and moderate ee up to 54%. These porphyrins showed unexpected conformational differences, as revealed by NMR spectroscopy. In particular, variable temperature NMR studies showed that the methoxy group in one of them undergoes intermediate conformational exchange on the 1H NMR time scale at room temperature. Lowering the temperature to -50 °C revealed the presence of four states in slow exchange on the NMR time scale. These results evidence a dynamic conformational equilibrium of the binaphthyl handles that adopt different, asymmetric positions with respect to the porphyrin plane.