Formaldehyde → HCID 67584924, compound

Participants

Reaction Conditions

Reaction Steps

To a solution of 0.666 g (1.665 mmol) of (Z)-5-(3-chlorostilbene-4'-sulfonyl)-4,5,6,7-tetrahydrofuro[3,2-c]pyridin in 10 ml of acetic acid, 0.21 ml (2.5 mmol) of pyrrolidine and 0.20 g (2.5 mmol) of 37% aqueous formaldehyde were added, followed by stirring at 100° C. for 1 hour. After the solvent was distilled off under reduced pressure, the residual solution was alkalified with aqueous sodium hydroxide and extracted with ethyl acetate 3 times. The combined organic layer was dried over anhydrous magnesium sulfate; the solvent was distilled off under reduced pressure. The resulting crude product was purified by silica gel column chromatography (ethyl acetate to ethyl acetate/methanol=4/1) to yield the desired product.

Provenance & Evidence