5284
J. Org. Chem., Vol. 49, No. 26, 1984
Additions and Corrections
Additions and Corrections Vol. 48, 1983
Mark P. Mack, Richard R. Hendrixson, Richard A. Palmer,* and Robert G. Ghirardelli*. Circular Dichroism Studies on Three Isomeric Dimethylbenzo-15-crown-5Ethers and Some of Their Complexes. Page 2030. The bottom line of Scheme I should read
Yo> OH "'
HO
NOH
- 3
~-c~H.,(ocH~cH~o~~)~
Jeffery B. Press,* Nancy H. Eudy, and George 0. Morton. Aryl Coupling Reactions of Pyrazolo[ 3,4-d]pyrimidin-4ylRadicals. Page 4607. Column 2, line 12, should read radical (16) instead of (15). Column 2, line 14, should read 16 instead of 15. Reference 13: the found value for carbon is 68.82.
Vol. 49, 1984
Edward L. Clennan* and M. E. Mehrsheikh-Mohammadi. Mechanism of Endoperoxide Formation. 2. Possibility of Exciplexes on the Reaction Coordinates.
Page 3443. Table I: for compound 1, bis(trimethylsilyr)amine, the pK = 29.5 is in error. The correct value is 25.8, based on equilibria measurements vs. 2-benzylpyridine and 4-benzylpyridine. Description of these experiments will be submitted shortly for publication in this journal.
Vera M. Kolb* and Duy H. Hua. Syn-Anti Isomerism in the Opiate Hydrazones and Azines Derived from Naloxone, Naltrexone, and Oxymorphone. Page 3825. Reference 10 should read Koman, A.; Kolb-Meyers, V.; Terenius, L. In "Investigation of Membrane-Located Receptors"; Reid, E., Cook, G. M. W., Moore, D. J., Eds.; Plenum: New York, 1984; pp 497-498. Reference 11 should read: Kolb, V. M. "Abstracts of Papers", 187th National Meeting of the American Chemical Society, St. Louis, MO, April, 1984;MEDI-32. Page 3827. The C-9 chemical shift for VI anti in Table I1 should be 64.62.
Maciej Adamczyk,* David S. Watt, and Daniel A. Netzel*. Synthesis of Biological Markers in Fossil Fuels. 2. Synthesis and 13C NMR Studies of Substituted Indans and Tetralins. Page 4227. The correct structure of compound 1 is
Page 1321. Contrary to that implied in the paper, singlet oxygen exciplexes (oxciplexes)have been considered by several authors well before the articles cited in ref 9. See: Stevens, B. J. Chem. SOC.A 1974, 29 for a review.
Robert R. Fraser* and Tarek S. Mansour. Acidity Measurements with Lithiated Amines: Steric Reduction and Electronic Enhancement of Acidity.
I 1
