Acetic Acid → HCID 23453192, compound

Participants

Reaction Conditions

Reaction Steps

2.96 g of 2-benzoylaminomethyl-2-hydroxymethyl-3,4,5-trihydroxypiperidine (Example 3) are dissolved in a mixture of 40 ml of methanol, 2 ml of water and 2.7 ml of acetic acid, and 5.7 ml of nonylaldehyde are added. The solution is cooled to 5° C. in an ice-bath; 1.35 g of sodium cyanoborohydride are then added. The mixture is stirred for 30 minutes, whilst cooling, and then at room temperature for 24 hours. It is concentrated, the residue is dissolved in 30 ml of methanol/water 6:1 and the solution is discharged onto a column 30 cm long and 3 cm wide which is filled with Amberlite IR 120, H+ form. The column is washed thoroughly with methanol/water in the ratio 8:1 and then eluted with 0.2% strength ammonia in methanol/water 6:1. The pure fractions, determined by thin layer chromatography, are combined and concentrated. 2.6 g of an almost colourless oil are obtained.

Provenance & Evidence