An improved and practical synthesis of 1,2-O-benzylidene and 1,2-O-p-methoxybenzylidene hexopyranoses as useful synthons in carbohydrate chemistry is described. The reaction of 2-benzoyloxyglycosyl bromide with sodium borohydride using excess amount of potassium iodide proceeded smoothly to give the corresponding 1,2-O-benzylidene derivative in good yields.
A convenient synthesis of 1,2-O-benzylidene and 1,2-O-ethylidene derivatives of carbohydrates
作者:Vitali I. Betaneli、Michael V. Ovchinnikov、Leon V. Backinowsky、Nikolay K. Kochetkov