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Solvent-Free Synthesis of Chiral Schiff-Base Ligands Based on Ferrocene under Microwave Irradiation and Application to Enantioselective Nitroaldol (Henry) Reaction
被引:6
|作者:
Ozturk, Gulsen
[1
]
Colak, Mehmet
[1
]
Demirel, Nadir
[2
]
机构:
[1] Dicle Univ, Dept Chem, TR-21280 Diyarbakir, Turkey
[2] Ahi Evran Univ, Dept Chem, Kirsehir, Turkey
来源:
关键词:
ferrocene;
microwave irradiation;
chiral Schiff-bases;
nitro aldol reaction;
Henry reaction;
ASYMMETRIC CATALYSIS;
EFFICIENT;
ALCOHOLS;
D O I:
10.1002/chir.20934
中图分类号:
R914 [药物化学];
学科分类号:
100701 ;
摘要:
Chiral Schiff-bases 3a-f based on ferrocene were designed and synthesized using solvent-free methods by mixing ferrocene carbaldehyde 1 with amino alcohols and amines 2a-f under microwave irradiation and classical method for the enantioselective nitroaldol (Henry) reaction. The Schiff-bases were obtained in shorter reaction times and improved yield under microwave irradiation method over classical method. The highest enantioselectivity was observed in ligand 3e (95% ee) when CH2Cl2 was used as solvent. Chirality 23: 374-378, 2011. (c) 2011 Wiley-Liss, Inc.
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页码:374 / 378
页数:5
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