Mixed-Ligand Arenechromium Carbonyl Complexes as Electronic Modulators
A number of mixed ligand η6 arenechromium carbonyl complexes have been prepared and investigated for their ability to effect electronic modulation of arene chemistry. In the case of an aniline-derived system, the arenechromium carbonyl complex is able to modulate the inductive capacity of the aniline nitrogen atom and thus, regulate its anchimeric ability. In the case of 8-phenylmenthol and benzyloxazolidinone derivatives, modulation of arene π basicity is achieved, and results suggest that important vinylarene π-π interactions exist in acrylate derivatives of these chiral auxiliary systems.
Jones, Graham B.,Chapman, Brant J.,Mathews, Jude E.
p. 2928 - 2938
(2007/10/03)
Preparation of 8-Phenylmenthol and Its Diastereomer, 2-epi,ent-8-Phenylmenthol. A Caveat
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Whitesell, James K.,Liu, Chi-Ling,Buchanan, Charles M.,Chen, Hwang-Hsing,Minton, Mark A.
p. 551 - 553
(2007/10/02)
A REINVESTIGATION OF ASYMMETRIC INDUCTION IN DIELS-ALDER REACTIONS
The chiral induction in the Diels-Alder addition 12, assessed reliably by (19)F-NMR-spectroscopy of the endo-esters 4, varied between 47-93 percent in favor of the 2-(R)-adducts 2 depending on the auxiliary chiral group and the Lewis-acid catalyst.
Oppolzer, Wolfgang,Kurth, Mark,Reichlin, Daniel,Moffatt, Frank
p. 2545 - 2548
(2007/10/02)
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