References
- 1980 . Presented in part at the third Meeting of Synthesis . Nov. 1980 , Porto Alegre, Brazil.
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- For the synthesis of phthalides 3a-d see P.R.R. Costa, et.al., Synth.Comm., preceeding paper.
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- The spectral data are in fully agreement with the proposed structures. Compounds 3a-d, 7c-d and 8c-d gave satisfactory elemental analysis.
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- Krohn , K. and Priyono , W. 1984 . Tetrahedron , 40 : 22 4609
- A more polar product was formed,but without an IR hydroxyl group absorption.