The masked formylation method employs dithianes for activated aromatics, suggesting a novel cleavage approach.
Here we describe a masked formylation strategy based on the activation of 1,3-dithiane oxide with oxalyl chloride. The reaction proceeds through a thionium ion intermediate, enabling efficient electrophilic aromatic substitution...
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Urbiña-Alvarez et al. (2025) studied this question.
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