Benzylidene protected bis-MPA, 2,2-bis(hydroxymethyl)propanoic acid, w
as synthesised and evaluated as building block in the construction of
dendrimers. It was found that the anhydride of benzylidene protected b
is-MPA reacts with neopentylic alcohols to give high yields of acylate
d products. Purification is facilitated by the crystalline nature of m
ost ester products. Deprotection by hydrogenolysis gives polyol dendri
mers in good yields. (C) 1998 Elsevier Science Ltd. All rights reserve
d.