Synlett

New synthetic approach to aminosquarylium cyanine dyes

LV Reis, JPC Serrano, P Almeida, PF Santos

Index: Reis; Serrano; Almeida; Santos Synlett, 2002 , # 10 p. 1617 - 1620

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Citation Number: 19

Abstract

Abstract A novel synthesis of aminosquarylium cyanine dyes, based on the methylation of readily available squarylium dyes with methyl triflate, followed by nucleophilic substitution with appropriate aliphatic amines, was disclosed. By this procedure several new aminosquarylium cyanine dyes bearing benzothiazole, benzoselenazole and quinoline nuclei were prepared.