Synthesis, characterization and spectroscopic properties of water soluble coumarins substituted with oligomeric alkoxy functions

HSP Rao, M Babu, A Desai

Index: Surya Prakash Rao; Babu, Mohan; Desai, Avinash RSC Advances, 2014 , vol. 4, # 22 p. 11064 - 11072

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Citation Number: 5

Abstract

Novel water soluble robust fluorescent coumarins substituted with oligomeric alkoxy functions were synthesized by incorporating the Blaise reaction in the key step. Mono- methylated oligomeric polyethylene glycols were subjected to a three step protocol, namely (i) Michael addition to acrylonitrile,(ii) Blaise reaction with ethyl bromoacetate and (iii) condensation with 4-N, N-diethylamino-2-hydroxybenzaldehyde to give fluorescent water ...