中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | (+/-)-ethyl α-hydroxy-α-(9-anthryl)acetate | 160727-69-5 | C18H16O3 | 280.323 |
—— | (R)-9-Anthrylglycolsaeure-ethylester | 167354-18-9 | C18H16O3 | 280.323 |
—— | (S)-9-Anthrylglycolsaeure-ethylester | 270258-63-4 | C18H16O3 | 280.323 |
—— | (+/-)-Ethyl α-methoxy-α-(9-anthryl)acetate | 160727-79-7 | C19H18O3 | 294.35 |
A green chemistry-based highly regioselective synthesis of ethyl (9-anthryl)glyoxylate was achieved by solvent-free Friedel-Crafts reaction at r. t. Several derivatives of ethyl (9-anthryl)glyoxylate were also synthesized. Ethyl (9-anthryl)hydroxyacetate was obtained almost quantitatively by reduction of ethyl (9-anthryl)glyoxylate with NaBH4, and (9-anthryl)methoxyacetic acid was prepared by methylation of ethyl (9-anthryl)hydroxyacetate with CH3I in the presence of Ag2O and hydrolysis of ethyl (9-anthryl)methoxyacetate. The hydrolysis of ethyl (9-anthryl)hydroxyacetate gave racemic (9-anthryl)hydroxyacetic acid, and the racemate was successfully resolved by crystallization of the diastereomeric salts resulting from the reaction of (±)-(9-anthryl)hydroxyacetic acid with (-)-ephedrine. As a byproduct, crystals containing racemic (±)-(9-anthryl)hydroxyacetate and protonated (-)-ephedrine were isolated and their structures determined by X-ray diffraction.