期刊
JOURNAL OF ORGANIC CHEMISTRY
卷 72, 期 1, 页码 123-131出版社
AMER CHEMICAL SOC
DOI: 10.1021/jo061824n
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[GRAPHICS] A detailed study to assess the enantioselectivity of the amino acid mediated intramolecular asymmetric aldol reaction of 1,3-cycloheptanedione bearing a C-2 methyl substituent has been undertaken. The cyclizations were mediated by a series of L-amino acids in the presence of an acid cocatalyst. Strikingly, the process is characterized by an inversion of enantioselectivity when compared to a similar reaction involving the 1,3-cyclohexanedione counterpart.
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