Reaction of 5-(t-butyldiphenylsiloxy)propyloxyisophthalic with dodecan
ol and diphenylphosphoryl azide (DPPA) affords the diurethane via Curt
ius reaction. Removal of the silyl group affords an alcohol which unde
rgoes similar reaction with,the isophthalic acid. Iteration of the pro
cess affords dendritic wedges through generation four, which can be at
tached to 1,3,5-benzenetricarboxylic acid in the same fashion. Materia
ls are characterized by NMR and MALDI-TOF mass spectrometry. (C) 1998
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