Double decarboxylative route to 3-substituted pyrrolidines: reaction of monoalkyl malonates and related carboxylic acids with sarcosine and formaldehyde
2020
Abstract Three-component reactions of monoalkyl malonates, cyanoacetic acids or 2-ketocarboxylic acids, N-methylglycine, and formaldehyde were developed to rapidly access 3-substituted pyrrolidines in 17–97% yield. These reactions represent a double decarboxylative domino-sequence promoted by pyrrolidine and involve N-methylazomethine ylide as the reactive intermediate. 2020 Elsevier Ltd. All rights reserved.
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