“…NMR [(CD^SO] 1.3 (d, 3, «7 = 8 Hz), 3.05 (s, 1), 3.6 (q, 1,«7=6 Hz), 6.6 (d, 1, <7= 3 Hz), 6.8 (s, 1), 7.0 (t, 1, «7= 4 Hz), 7.8 (s, 2); MS (70 ev) m/e (rel intensity) 636 (40), 510 (20), 337 (25), 254 (12), 210 (20), 127 (100), 105 (18), 90 (15), 75 (12), 63 (25). Anal.…”