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Ester- and amide-terminated dendrimers with alternating amide and ether generations

✍ Scribed by Yijun Pan; Warren T. Ford

Publisher
John Wiley and Sons
Year
2000
Tongue
English
Weight
188 KB
Volume
38
Category
Article
ISSN
0887-624X

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✦ Synopsis

Ester-terminated polyamide dendrimers up to the third generation and amide-terminated polyamide dendrimers of the first generation were synthesized by convergent growth. The Williamson ether synthesis and diphenylphosphoryl azide (DPPA) coupling of amines to carboxylic acids were used for the construction of the dendrimers, having alternate ether and amide generations. The methyl ester-and N,N-diethylamide-terminated dendrimers were readily soluble in common organic solvents while the N-methylamide-and N-benzylamide-terminated dendrimers were soluble only in DMF and DMSO. Both the end and internal amide groups of the N,Ndiethylamide-terminated dendrimer were reduced by LiAlH 4 to form a polyamine dendrimer.

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