Journal
TETRAHEDRON LETTERS
Volume 45, Issue 24, Pages 4635-4638Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tetlet.2004.04.110
Keywords
phthalides; MO(CO)(6); carbon monoxide source
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A fast method utilizing in situ generated CO for the synthesis of phthalides has been developed. DMF and MO(CO)(6) were applied as two alternative CO-sources in these microwave promoted carbonylation-lactone formation reactions. MO(CO)(6) was found to be the more generally applicable CO-source and provided phthalides as well as dihydroisocoumarin, dihydroisoindone, and phthalimide from the corresponding aryl bromide via an efficient CO insertion within a 1 h reaction time. (C) 2004 Elsevier Ltd. All rights reserved.
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