Efficient Nickel-Catalyzed [2 + 2 + 2] Cycloaddition of CO2 and Diynes [J. Am. Chem. Soc. 2002, 124, 15188-15189]. Janis Louie,* John E. Gibby, Marc V. Farnworth, and Thomas N. Tekavec Page 15189. We incorrectly assigned the regiochemistry of pyrone 25. X-ray analysis revealed that the TMS group is at the 3-position rather than the 6-position. The correct structure is shown here:
JA046854R 10.1021/ja046854r Published on Web 06/19/2004
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J. AM. CHEM. SOC. 2004, 126, 8590
10.1021/ja046854r CCC: $27.50 © 2004 American Chemical Society
