... NMR (CDCb) 10.15 (4H, s, meso), 8.88 (2H, d, J = 7.7 Hz, Ar-H), 8.28 (lH, t, J = 7.7 Hz ... The organic layers were combined and neutralized with aqueous NaHcO3. ... is contained in libraries on microfiche, immediately follows this article in the microfilm version of the journal, and can ...