Method for substituting a substitution compound for the hydrogen of a support bound primary hydroxyl group. The support bound primary hydroxyl group is treated in an organic, substantially anhydrous solvent in the presence of a tertiary amine base and the substitution compound. The substitution compound has a positive moiety and a negative moiety. The positive moiety is selected from the group consisting of trityl, pixyl, and derivatives thereof. The reagent is selected from the group consisting of tetraalkylammonium salts, inorganic salts, and mixtures thereof. Each reagent has a cation and an anion moiety. The cation moiety of the reagent is more electropositive than the positive moiety of the substitution compound. This relationship enables the reagent to attract the negative moiety of the substitution compound.
一种用取代化合物替代支持物上的原位结合的一级羟基的方法。在有机、基本无
水的溶剂中,在三级胺碱和取代化合物的存在下处理支持物上的一级羟基。取代化合物具有正离子和负离子。正离子选自三苯甲基、
三甲苯基和其衍
生物组成的群。试剂选自四烷基
铵盐、
无机盐和其混合物组成的群。每种试剂都有一个阳离子和一个阴离子。试剂的阳离子比取代化合物的正离子更电正,这种关系使得试剂能够吸引取代化合物的负离子。