J. Am. Chem. Soc., 116, 5662 (1994)

Compounds #8a and #8b in this publication have the same chemical shift for the C=O group at 170.46ppm. Whereas the value in compound #8a is in the correct expectation range, the CO of #8b should be expected around 195-197ppm instead of 170.46ppm.

The original data as given in the paper are shown - the deviation between the  experimental value and the predicted value is approximately 26ppm. It can be assumed, that this error is simply caused by a typo.


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Page written on: March 27th, 2008