Vol. 71, 2006
Benoıˆt Laleu, Ge´ rald Bernardinelli, Remi Chauvin, and Je´ roˆ me Lacour*. Trimesitylmeth-
Sanjio S. Zade and Michael Bendikov*. Cyclic
ylphosphonium Cation. Supramolecular Stereocontrol and Simple Enantiomerization Mechanism Determination.
Oligothiophenes: Novel Organic Materials and Models for Polythiophene. A Theoretical Study.
Page 2980. Due to a misprint, graphs from Figure 8 were incorrectly printed in Figure 9. The correct graphs for Figure 9 should be as follows:
Page 7413. Reference 6 should read as follows: 6. Brunner, H.; Oeschey, R.; Nuber, B. Organometallics 1996, 15, 3616-3624. Brunner, H.; Oeschey, R.; Nuber, B. Angew. Chem., Int. Ed. Engl. 1994, 33, 866-869. Ayscough, A. P.; Costello, J. F.; Davies, S. G. Tetrahedron: Asymmetry 2001, 12, 1621-1624. JO0701886 10.1021/jo0701886 Published on Web 02/09/2007 Vol. 72, 2007
Jun’ichi Uenishi,* Sachiko Aburatani, and Taro Takami. Stereocomplexity and Stereoselective Synthesis of Triamine Molecules Bearing Four Chiral Carbon Centers: Stereodifferentiated Preparation of All 10 Stereoisomers of 2,6Bis[1-(1-phenylethylamino)ethyl]pyridines.
Page 136. In Figure 3, the ORTEP view of compound 16 was incorrect. The corrected structure is shown below.
JO070121I 10.1021/jo070121i Published on Web 02/20/2007
Dorota Gryko,* Magdalena Zimnicka, and Radosław Lipin´ ski. Brønsted Acids as Additives for the Direct Asymmetric Aldol Reaction Catalyzed by L-Prolinethioamides. Direct Evidence for Enamine-Iminium Catalysis.
Page 965. We wish to clarify a misleading statement that appeared in our paper. The discussion implied that Prof. Jian Sun did not provide an explanation for the beneficial effect of the TFA addition to the trans-4-hydroxy-L-proline hydrazidecatalyzed aldol reaction on the stereochemical results. In fact, theoretical calculations were conducted in order to explain this effect. Protonation of one of the prolyl groups of the catalyst by TFA was believed to be crucial to both the reactivity and stereoselectivity, which facilitates the formation of a hydrogenbonding network in the transition state. JO070151L
JO0702241
10.1021/jo070151l Published on Web 02/07/2007
10.1021/jo0702241 Published on Web 02/20/2007
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J. Org. Chem. 2007, 72, 2258
