24/10/2023 Chemists
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he mixture was then concentrated at reduced pressure, and the residue was purified by flash column chromatography on silica gel (hexanes/EtOAc,10:1) t...
To a solution of piperonal (1, 3.00 g, 19.9 mmol) in CH2Cl2 (100 mL) was added (carbethoxyethylidene)triphenylphosphorane (2,14.5 g, 40.0 mmol), and t...
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