A practical strategy for the synthesis of spiro[5.5]trienones-fused
selenocyanates and spiro[4.5]trienones-fused selenocyanates through
electrophilic selenocyanogen cyclization and dearomative spirocyclization
is reported. This approach was conducted under mild conditions with
broad substrate scope and good functional group tolerance. The utility
of this procedure is exhibited in the late-stage functionalization
of nature product and drug molecules.
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