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- W2000700068 abstract "The resolution of (±)-trans-1-benzyl-5-ethyl-2-oxo-4-piperidineacetic acid [(±)-1] was effected with (R)-(+)-α-phenylethylamine through formation of the diastereomeric salts (+)-2 and (-)-3. Conversion of (+)-1 into the (3R, 4R)-(+)-enantiomer [(+)-6] of the title compound proceeded via a route involving debenzylation of (+)-1 with Na in liquid NH3, esterification of the resulting (+)-4 to give (+)-5, and ethylation of (+)-5 with triethyloxonium fluoroborate. A parallel sequence of reactions starting from (-)-1 produced (-)-6 through (-)-4 and (-)-5." @default.
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- W2000700068 date "1985-01-01" @default.
- W2000700068 modified "2023-09-28" @default.
- W2000700068 title "Lactams. XXII. Preparation of the enantiomers of 6-ethoxy-3-ethyl-2,3,4,5-tetrahydro-4-pyridineacetic acid ethyl ester." @default.
- W2000700068 doi "https://doi.org/10.1248/cpb.33.358" @default.
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