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- W4254421110 abstract "Phenethyl arylacetates are alkylated under phase-transfer conditions with cinchona catalysts with alkyl halides in high yield with excellent enantioselectivity (84–99% ee) following recrystallization. Cinchonidine (CD) derived catalyst gave the (R)-product and cinchonine (CN) catalyst produced the (S)-product. The phenethyl (PE) ester group is removed, using ammonium formate and catalytic Pd/C, to give alkylated carboxylic acid products in high selectivity. The utility of the approach is demonstrated by a direct synthesis of (S)-naproxen™." @default.
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- W4254421110 date "1927-10-01" @default.
- W4254421110 modified "2023-09-30" @default.
- W4254421110 title "Organic bases and soluble tungstates" @default.
- W4254421110 doi "https://doi.org/10.1016/s0016-0032(27)91434-3" @default.
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