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. Author manuscript; available in PMC: 2010 May 1.
Published in final edited form as: J Org Chem. 2009 May 1;74(9):3554–3557. doi: 10.1021/jo9002932

Figure 1.

Figure 1

(a) ORTEP drawing (30% probability ellipsoids) of 4a; (b) 31P{1H} (top) and 1H NMR (bottom) spectra recorded for 4a; (c) Calculated (red, upper) and experimental (blue, bottom) ESI mass spectra recorded for 4a.