4'-Hydroxyacetophenone → 4-acetylphenyl 2,3,4-tri-O-acetyl-5-thio-beta-D-xylopyranoside

Beteiligte Stoffe

Reaktionsschritte

If the procedure described in Preparation LXXXIII is followed starting from 2 g (14.7.10-3 mol) of 1-(4-hydroxyphenyl)ethanone, 2.8 g (16.10-3 mol) of silver imidazolate, 5.74 g (16.1.10-3 mol) of 2,3,4-tri-O-acetyl-5-thio-α-D-xylopyranosyl bromide and 4 g (29.3.10-3 mol) of zinc chloride in 100 ml of methylene chloride, 0.96 g (yield: 18%) of the expected product is obtained after purification by chromatography on silica gel using a toluene/ethyl acetate mixture (6/1 v/v) as the eluent.

Herkunft & Nachweise