Ion-supported chiral pyrrolidines as enantioselective catalysts for direct Michael addition of nitroalkenes in [BMIm]PF6

Synlett

Volumn , Issue 16, 2006, Pages 2569-2572

  Xu, Danqian ^a   Luo, Shuping ^a   Yue, Huadong ^a   Wang, Liping ^a   Liu, Yunkui ^a   Xu, Zhenyuan ^a  

^a ZHEJIANG UNIVERSITY OF TECHNOLOGY   (China)

Author keywords

Aldehydes; Asymmetric Michael reaction; Imidazolium supported pyrrolidine; Ionic liquids; Ketones; Nitroalkenes

Indexed keywords

ALDEHYDE; ALKENE DERIVATIVE; KETONE; PYRROLIDINE DERIVATIVE;

ARTICLE; CATALYSIS; CHIRALITY; ENANTIOSELECTIVITY; MICHAEL ADDITION;

EID: 33750091660     PISSN: 09365214     EISSN: None     Source Type: Journal    
DOI: 10.1055/s-2006-950443     Document Type: Article

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39. 2O (20 mL) was stirred at r.t. Solvents of the mixtures were distilled and evaporated under vacuum. The residue was then dissolved in MeOH-acetone to let the inorganic salts precipitate, which were then filtered off. After evaporating the solvents, the desired imidazolium-supported pyrrolidines 5a-d were obtained.
40. +: 180.1495; found: 180.1494.
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44. 6 system could be reused directly in subsequent reactions without further disposal.