Xanthone in synthesis: a reactivity profile via directed lithiation of its dimethyl ketal

 
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Xanthone in synthesis: a reactivity profile via directed lithiation of its dimethyl ketal (EN)

Odrowaz-Sypniewski, M. R. (EN)

Πανεπιστήμιο Ιωαννίνων. Σχολή Θετικών Επιστημών. Τμήμα Χημείας (EL)
Odrowaz-Sypniewski, M. R. (EN)

Xanthone, as its dimethyl ketal, undergoes functionalization with a synthetically useful degree of regioselectivity using a lithiation protocol. The core structure is regenerated during the work-up. Monosubstitution at C-4 or C-1 and disubstitution at C-4 and C-5 OF C-1 and C-5 are observed. The substitution pattern appears to be dependent upon the experimental conditions. (C) 2009 Elsevier Ltd. All rights reserved. (EN)

xanthone (EN)


Tetrahedron Lett (EN)

English

2009


Elsevier (EN)



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