“…The analyses are as described previously. 28 Also isolated with eluent: heptane/EtOAc 90:10 (R f = 0.62) was 2-(5-methyl-2-thienylamino)acetophenone (8c′) (30 mg, 13%) as an orange oil. 594, 612, 750, 796, 955, 1019, 1038, 1092, 1151, 1242, 1311, 1357, 1398, 1419, 1450, 1504, 1572, 1604, 1638, 1678, 2914, 2965, 3236 cm -1 .…”