L‐Proline‐Catalyzed Asymmetric Direct Aldol Reaction of Heteroaromatic Aldehydes and Acetone: Improvement of Catalytic Efficiency in Ionic Liquid bmim [BF₄]

K. Rajender Reddy Inorganic and Physical Chemistry Division, Indian Institute of Chemical Technology, Hyderabad, IndiaCorrespondence[email protected] or [email protected]

L. Chakrapani Inorganic and Physical Chemistry Division, Indian Institute of Chemical Technology, Hyderabad, India

T. Ramani Inorganic and Physical Chemistry Division, Indian Institute of Chemical Technology, Hyderabad, India

C. V. Rajasekhar Inorganic and Physical Chemistry Division, Indian Institute of Chemical Technology, Hyderabad, India

Abstract

l‐proline in bmim [BF₄] ionic liquid has been successfully used as an efficient and reusable catalyst for the direct asymmetric aldol reaction of acetone with different heteroaromatic aldehydes to afford higher selectivity of the aldol products with good enantioselectivity.

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Acknowledgment

We thank the Council of Scientific and Industrial Research (CSIR) for financial support under the Task Force Project CMM‐0005. L. C. P., T. R., and C. V. R. thank the CSIR, India, for research fellowships.

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L‐Proline‐Catalyzed Asymmetric Direct Aldol Reaction of Heteroaromatic Aldehydes and Acetone: Improvement of Catalytic Efficiency in Ionic Liquid bmim [BF₄]

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L‐Proline‐Catalyzed Asymmetric Direct Aldol Reaction of Heteroaromatic Aldehydes and Acetone: Improvement of Catalytic Efficiency in Ionic Liquid bmim [BF4]

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L‐Proline‐Catalyzed Asymmetric Direct Aldol Reaction of Heteroaromatic Aldehydes and Acetone: Improvement of Catalytic Efficiency in Ionic Liquid bmim [BF₄]