Zhang Z, Meng XJ, Cui FH, Tang HT, Wang YC, Huang GB, Pan YM. Electrochemically Promoted Three-Component Reaction to
N-Sulfonyl Amidines.
Org Lett 2024;
26:193-197. [PMID:
38147844 DOI:
10.1021/acs.orglett.3c03820]
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Abstract
In this study, a multicomponent reaction via the Mannich intermediate was developed using methanol, secondary amine, and sulfonamide as starting materials. This method uses methanol as a green C1 source. The substrate scope is wide, and the yield is good. The mechanistic study shows that methanol generates formaldehyde under electrochemical conditions, and sulfonyl amidine as a nucleophile reacts with Schiff base intermediates to form N-sulfonyl amidine in a single step.
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