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- W2065735464 abstract "Experimental diastereoselectivities of the direct solvent-less (neat) aldol reactions of tropinone (8-methyl-8-azabicyclo[3.2.1]octan-3-one) and granatanone (pseudopelletierine, 9-methyl-9-azabicyclo[3.3.1]nonan-3-one) in the presence of catalytic amounts of water are most accurately reproduced by thermodynamic distributions of isomeric products calculated in the gas phase at the B3LYP/6-31g(d) level of theory. Less than 30% systematic errors, on average, exist in the predicted anti/syn-diastereomeric ratio (dr) for the solvent-less reaction of tropinone with several aromatic aldehydes. The CPCM-B3LYP/6-31g(d) method reproduces the anti/syn-diastereomeric ratio of the aqueous aldol reaction of tropinone with several aromatic aldehydes with reasonable deviation (0–88%), excellent (0–10)% agreement was found for the reactions of tropinone and granatanone with benzaldehyde. Qualitatively satisfactory agreement was also found for dr values in different solvents (DMF, THF, and Et3N). The density functional theory (DFT) results support the notion of the thermodynamic control of the reaction." @default.
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- W2065735464 date "2012-10-01" @default.
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- W2065735464 title "A DFT study of the origins of the stereoselectivity in the aldol reaction of bicyclic amino ketones in the presence of water" @default.
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- W2065735464 doi "https://doi.org/10.1016/j.tetlet.2012.08.070" @default.
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