Direct asymmetric aldol reactions in brine with recyclable fluorous β-aminosulfonamide organocatalysts
摘要:
Fluorous organocatalyst 3 promotes direct asymmetric aldol reactions of ketones with aldehydes in brine, leading to the synthesis of the corresponding anti-aldol products in high yields with up to 96% ee. Fluorous organocatalyst 3 is easily recovered by solid-phase extraction using fluorous silica gel and can be reused up to five times without purification. (C) 2011 Elsevier Ltd. All rights reserved.
Direct asymmetric aldol reactions in brine with recyclable fluorous β-aminosulfonamide organocatalysts
摘要:
Fluorous organocatalyst 3 promotes direct asymmetric aldol reactions of ketones with aldehydes in brine, leading to the synthesis of the corresponding anti-aldol products in high yields with up to 96% ee. Fluorous organocatalyst 3 is easily recovered by solid-phase extraction using fluorous silica gel and can be reused up to five times without purification. (C) 2011 Elsevier Ltd. All rights reserved.