1-Methyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole → 2-Chloro-5-(1-methyl-1H-pyrazol-4-yl)phenyl 2,3,4-tri-O-acetyl-5-thio-beta-D-xylopyranoside

Participants

Reaction Steps

By carrying out the operation analogously to example 87, starting from 1-methyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole and 5-bromo-2-chlorophenyl 2,3,4-tri-O-acetyl-5-thio-β-D-xylopyranoside obtained according to preparation X, the expected product is obtained and is reacted further without additional purification in order to obtain the nonacetylated xyloside.

Provenance & Evidence