... Organic Letters. ... (b) Comprehensive Heterocyclic Chemistry; Katritzky, AR, Rees, CW, Eds; Pergammon: New York, 1984; Vol. 2. There is no corresponding record for this reference. ... (c) Krasovitskii, BM; Bolotin, BM Organic Luminescent Materials; VCH: New York, 1988. ...