Abstract
The radical chain reaction of benzenethiol with accessible 4-pentynylthiol esters provides a new stannane/silane-free protocol for the production of aromatic and aliphatic aldehydes. The procedure is especially useful forthe aryl and primary aldehydes, even in the presence of substituents highly sensitive to reductive conditions, and is also of some utility for the vinylic and secondary ones. The protocol is instead not applicable to the tertiary aldehydes, owing to preferential alkane-forming decarbonylation, although the tertiary ones derived from bridgehead precursors can still be usefully produced.
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