Benzenesulfonic acid, 4-methyl-, compd. with pyridine (1:1) → HCID 14852605, compound

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Reaction Steps

Methyl 5,6-dihydroxyhexanoate (0.32 g, 2.0 mmol), 2E,4E-dodecadienal and catalytic pyridinium p-toluenesulfonate (PPTS) were refluxed in 10 ml of benzene for 39 hours with a Dean-Stark trap. Molecular sieves were added after 19 hours. The reaction mixture was cooled, filtered and concentrated. Flash chromatography on silica gel with 25:1 hexane/ethyl acetate as eluent gave the product (0.10 g, 0.31 mmol), 15%.

Provenance & Evidence