Abstract
Pd-catalyzed reductive carbonylation of aryl sulfonates using N -formylsaccharin as a carbon monoxide (CO) surrogate was developed. This external-CO-free carbonylation provides a safe and practical access to aldehydes from phenol derivatives. The reaction has a broad substrate scope, rendering it an attractive method for synthesizing aldehydes. • External-CO-free reductive carbonylation has been achieved. • Readily available aryl sulfonates can be used as substrates. • N-Formylsaccharin is a useful CO surrogate for the reaction. • Various functional groups are tolerated under the reaction conditions.
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