A new chiral tetradentate ligand (S, S)-1, 5-bis (4-benzyloxazolin-2-yl-methyl)-1, 5-diazacyclo-octane 1 has been synthesized and the application of 1 as catalyst in the enantioselective addition of diethyl zinc to be...A new chiral tetradentate ligand (S, S)-1, 5-bis (4-benzyloxazolin-2-yl-methyl)-1, 5-diazacyclo-octane 1 has been synthesized and the application of 1 as catalyst in the enantioselective addition of diethyl zinc to benzaldehyde is also described.展开更多
New chiral substituted 8-quinolinyl-oxazoline ligands have been synthesized and applied in the copper(I)-catalyzed asymmetric cyclopropanation of styrene with alkyl diazoacetates. The steric effect in the ligands play...New chiral substituted 8-quinolinyl-oxazoline ligands have been synthesized and applied in the copper(I)-catalyzed asymmetric cyclopropanation of styrene with alkyl diazoacetates. The steric effect in the ligands plays a significant role in the enantiocontrol in asymmetric cyclopropanation, while the electronic effect is less important.展开更多
文摘A new chiral tetradentate ligand (S, S)-1, 5-bis (4-benzyloxazolin-2-yl-methyl)-1, 5-diazacyclo-octane 1 has been synthesized and the application of 1 as catalyst in the enantioselective addition of diethyl zinc to benzaldehyde is also described.
文摘New chiral substituted 8-quinolinyl-oxazoline ligands have been synthesized and applied in the copper(I)-catalyzed asymmetric cyclopropanation of styrene with alkyl diazoacetates. The steric effect in the ligands plays a significant role in the enantiocontrol in asymmetric cyclopropanation, while the electronic effect is less important.
