How is [(2,3,4,6-Tetra-O-acetyl-beta-D-galactopyranosyl)thio]acetonitrile (CAS: 61145-33-3) typically synthesized?

[(2,3,4,6-Tetra-O-acetyl-beta-D-galactopyranosyl)thio]acetonitrile is synthesized through a multi-step process involving the acetylation of galactopyranosyl thioacetonitrile followed by the introduction of the galactopyranosyl moiety. This process typically involves the use of acetic anhydride and a catalytic amount of acid or base. The yield and selectivity of the reaction can be controlled by optimizing reaction conditions.