Palladium-catalysed heteroannulation with terminal alkynes: synthesis of phthalides 1
- 1 January 1998
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society, Perkin Transactions 1
- No. 3,p. 561-568
- https://doi.org/10.1039/a705450e
Abstract
The palladium–copper-catalysed heteroannulation of o-iodobenzoic acid 3 with terminal alkynes 4–18 leads to the synthesis of (Z)-3-alkylidenephthalides 19–33 as the major products. In certain cases, the formation of isocoumarins 34–37 is also observed.Keywords
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