Dy(OTf)3 in ionic liquid: An efficient catalytic system for reactions of indole with aldehydes/ketones or imines

Tetrahedron Letters

Volumn 45, Issue 23, 2004, Pages 4567-4570

  Mi, Xueling ^a   Luo, Sanzhong ^b   He, Jiaqi ^a   Cheng, Jin Pei ^a,b  

^a NANKAI UNIVERSITY   (China)

^b INSTITUTE OF CHEMISTRY   (China)

Author keywords

[No Author keywords available]

Indexed keywords

ALDEHYDE; IMINE; INDOLE; KETONE;

ARTICLE; CATALYSIS; CHEMICAL REACTION; DECOMPOSITION; IONIZATION; RECYCLING; SEPARATION TECHNIQUE;

EID: 2342483570     PISSN: 00404039     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.tetlet.2004.04.039     Document Type: Article

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27. 4 (2 mL) was added indole (2 mmol) and aldehyde (1 mmol). The reaction mixture was sealed in a vial and stirred for 1 h. After complete conversion, as indicated by TLC, the product was extracted with diethyl ether and purified by flash chromatography on silica gel. Catalyst recycling study was conducted similarly. After extraction with diethyl ether to separate the products, the residue solvent was removed in vacuum and the resulting ionic liquid layer was reused for the next run