A small molecule, namely nitroacenaphthene, is reported for the first time as a recyclable
visible-light photocatalyst for the construction of the C=N bond from sulfonyl azides
and amines. This scalable, site-selective protocol provides a convenient way to access
various sulfonyl amidines under mild conditions. Two reaction pathways are proposed,
according to different transformation patterns.
Key words
nitroacenaphthene - photocatalyst - carbon-nitrogen double bond - sulfonyl amidines
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N′-sulfonylimidamides - site selectivity