中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | 2-[(dipropylamino)methyl]-4-phenyl-5-(2-thienyl)-2,4-dihydro-3H-1,2,4-triazole-3-thione | 1442122-48-6 | C19H24N4S2 | 372.558 |
—— | 2-(morpholin-4-ylmethyl)-4-phenyl-5-(2-thienyl)-2,4-dihydro-3H-1,2,4-triazole-3-thione | 930921-07-6 | C17H18N4OS2 | 358.488 |
—— | 2-[(4-methylpiperidin-1-yl)methyl]-4-phenyl-5-(2-thienyl)-2,4-dihydro-3H-1,2,4-triazole-3-thione | 1442122-47-5 | C19H22N4S2 | 370.542 |
—— | 3-<2'-(5'-Chlorothienyl)>-4-phenyl-5-chloro-1,2,4-triazol | 57022-98-7 | C12H7Cl2N3S | 296.18 |
—— | 3-(benzylthio)-4-phenyl-5-(thiophen-2-yl)-4H-1,2,4-triazole | 454201-26-4 | C19H15N3S2 | 349.48 |
—— | ethyl 2-((4-phenyl-5-(thiophen-2-yl)-4H-1,2,4-triazol-3-yl)thio)acetate | 6067-21-6 | C16H15N3O2S2 | 345.446 |
—— | 2-{[4-phenyl-5-(thien-2-yl)-4H-1,2,4-triazol-3-yl]thiomethyl}-1H-benzimidazole | 1279115-77-3 | C20H15N5S2 | 389.505 |
—— | N-phenyl-2-[(4-phenyl-5-thiophen-2-yl-1,2,4-triazol-3-yl)sulfanyl]acetamide | —— | C20H16N4OS2 | 392.5 |
—— | N-(4-methylphenyl)-2-{[4-phenyl-5-(thiophen-2-yl)-4H-1,2,4-triazol-3-yl]sulfanyl}acetamide | —— | C21H18N4OS2 | 406.5 |
—— | N-(4-bromophenyl)-2-[(4-phenyl-5-thiophen-2-yl-1,2,4-triazol-3-yl)sulfanyl]acetamide | —— | C20H15BrN4OS2 | 471.4 |
—— | N-(4-chlorophenyl)-2-{[4-phenyl-5-(thiophen-2-yl)-4H-1,2,4-triazol-3-yl]sulfanyl}acetamide | —— | C20H15ClN4OS2 | 426.9 |
—— | 5-nitro-2-(4-phenyl-5-(thiophen-2-yl)-4H-1,2,4-triazol-3-ylthio)-thiazole | 1099449-04-3 | C15H9N5O2S3 | 387.467 |
An efficient method for the asymmetric synthesis of a-amino acids, containing furyl- and thiophenyl-substituted triazoles in their side-chain, is reported. The strategy relies on Michael addition of 3,4,5-substituted 1,2,4-triazoles to the C=C bond of chiral NiII complexes containing the Schiff base formed from dehydroamino acids (dehydroalanine and (E + Z)-dehydroaminobutyric acid) and from chiral auxiliaries, i. e. (S)-2-N-(N0-benzylprolyl)aminobenzophenone and (S)-2-N- (N0-2-chlorobenzylprolyl) aminobenzophenone. The reactions proceeded with good to very good diastereoselectivity. Hydrolysis of the diastereomeric mixtures of metal complexes afforded the enantiomerically pure a-amino acids with high enantiomeric excess (ee> 98%).