Quinoxaline-bridged porphyrinoids

Recently, Sessler and coworkers [32] have synthesized a quinoxaline-bridged porphyrinoid 35 that can be used as a naked-eye sensor for F . Upon addition of F" to a 10% DMSO CH2Cl2 solution of compound 35, the color of the solution changed from pale orange ( =427 nm) to red (Amax=480 nm) with... 

The X-ray crystal structures of pyrazine V.JV -dioxide (134) <02AX(E)1253>, the P-polymorph of phenazine (135) <02AX(C)181>, cobalt(III) complexes of pyrazine-2,6- and pyridine-2,6-dicarboxylic acids <02JIC458>, and bis-urea-substituted phenazines <02ZN(B)937> were reported. Fluorescent pyrido[l,2-a]quinoxalines 136 prepared as pH indicators were examined by X-ray crystallography <02JCS(P2)181>, as were macrocyclic quinoxaline-bridged porphyrinoids obtained from the condensation of dipyrrolylquinoxalines 137 and 1,8-diaminoanthracene... 

The quinoxaline-bridged porphyrinoids 117a-c were prepared from the acid-catalyzed condensation of 1,8-diaminoanthracene with diformyl-substituted DPQ (63a-c) (2002JA13474).The latter intermediates were readily obtained from 116 the DPQ derivatives 115a-c (1999JA10438) by subjecting... 

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See also in sourсe #XX -- [ ]

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