Erratum: Efficient and short route for the regioselective synthesis of highly substituted, angularly fused furano-, pyrano-, and pyrrolocoumarin= quinolone derivatives by metal-mediated cyclization (Synthetic Communications (2010) 40:14 (2147-2157))

Full text of DOI:10.1080/00397911.2010.534664

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Corrigendum
Published online: 05 Nov 2010.
To cite this article: (2010) Corrigendum, Synthetic Communications: An International
Journal for Rapid Communication of Synthetic Organic Chemistry, 40:23, 3585-3586, DOI:
10.1080/00397911.2010.534664
To link to this article: http://dx.doi.org/10.1080/00397911.2010.534664
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Synthetic Communications1, 40: 3585–3586, 2010
Copyright # Taylor & Francis Group, LLC
ISSN: 0039-7911 print=1532-2432 online
DOI: 10.1080/00397911.2010.534664
CORRIGENDUM
In the article ‘‘Efficient and Short Route for the Regioselective Synthesis of Highly
Substituted, Angularly Fused Furano-, Pyrano-, and Pyrrolocoumarin=Quinolone
Derivatives by Metal-Mediated Cyclization,’’ by K. C. Majumdar, Shovan Mondal,
and Buddhadeb Chattopadhyay, which was published in Volume 40, Number 14,
2010, pp. 2147–2157 of Synthetic Communications1, the authors suggest the following
corrections to their article:
1. Throughout the article, Pd(acac)2 should be replaced with Pd(OAc)2.
2. Throughout the article, Cu(acac)2 should be replaced with Cu(OAc)2.
3. We checked the reactions of compounds 2 to 5 and compound 6 to 7 again, and
we are unable to reproduce the results. We, therefore, withdraw the conversions
2 to 5 and 6 to 7 (from Scheme 1, and Structures 5 and 7 from Table 3) and the
corresponding experimentals for 5 and 7. The corrected Scheme 1 and Table 3 are
given here:
Scheme 1. Synthesis of furano- and pyranocoumarin derivatives. Reagent and conditions: (i) PdCl2
(4 mol%), Cu(OAc)2.H2O (3 eq), LiCl (3 equiv), DMF-water (9:1), rt, 3 h.
3585

3586
CORRIGENDUM
Table 3. Synthesis of furano-, pyrano-, and pyrrolocoumarin and quinolone derivatives
The authors apologize for any inconvenience these errors may have caused readers of
Synthetic Communications1.