A novel styryl-containing pyrrole was developed by the reaction of E-4-phenylbut-3-en-2-one with 3-phenyl-2H-azirine in the presence of LDA. Utilizing this pyrrole, asymmetric styryl-containing aza-BODIPYs have been prepared in the NIR region as a result of the combined extension of conjugation. This styryl-containing aza-BODIPY was bright enough to be suited to label living cells for imaging assays in the NIR region.
X. Jiang, D. Xi, J. Zhao, H. Yu, G. Sun and L. Xiao, RSC Adv., 2014, 4, 60970 DOI: 10.1039/C4RA10188J
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